Home / 72,040,346,438.94-99,415,687,509.18-39,927,781,792.89

Finding the Fourth Proportional to 72,040,346,438.94, 99,415,687,509.18 and 39,927,781,792.89

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Solution

The fourth proportional to 72,040,346,438.94, 99,415,687,509.18 and 39,927,781,792.89 is: 55,100,344,097.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,040,346,438.94 : 99,415,687,509.18 = 39,927,781,792.89 : x
  2. Step 2: Convert to fraction form
    72,040,346,438.94/99,415,687,509.18 = 39,927,781,792.89/x
  3. Step 3: Cross multiply
    72,040,346,438.94x = 99,415,687,509.18 × 39,927,781,792.89
  4. Step 4: Simplify right side
    72,040,346,438.94x = 3,969,447,877,656,678,760,448
  5. Step 5: Solve for x
    x = 3,969,447,877,656,678,760,448/72,040,346,438.94
  6. Step 6: Final answer
    x = 55,100,344,097.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.