Home / 72,724,776.17-100,362,320.60-39,687,154.09

Finding the Fourth Proportional to 72,724,776.17, 100,362,320.60 and 39,687,154.09

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Solution

The fourth proportional to 72,724,776.17, 100,362,320.60 and 39,687,154.09 is: 54,769,434.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,724,776.17 : 100,362,320.60 = 39,687,154.09 : x
  2. Step 2: Convert to fraction form
    72,724,776.17/100,362,320.60 = 39,687,154.09/x
  3. Step 3: Cross multiply
    72,724,776.17x = 100,362,320.60 × 39,687,154.09
  4. Step 4: Simplify right side
    72,724,776.17x = 3,983,094,882,032,839.50
  5. Step 5: Solve for x
    x = 3,983,094,882,032,839.50/72,724,776.17
  6. Step 6: Final answer
    x = 54,769,434.74

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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.