Home / 72,698,132.88-100,323,709.92-39,659,088.24

Finding the Fourth Proportional to 72,698,132.88, 100,323,709.92 and 39,659,088.24

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Solution

The fourth proportional to 72,698,132.88, 100,323,709.92 and 39,659,088.24 is: 54,729,698.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,698,132.88 : 100,323,709.92 = 39,659,088.24 : x
  2. Step 2: Convert to fraction form
    72,698,132.88/100,323,709.92 = 39,659,088.24/x
  3. Step 3: Cross multiply
    72,698,132.88x = 100,323,709.92 × 39,659,088.24
  4. Step 4: Simplify right side
    72,698,132.88x = 3,978,746,864,281,443.50
  5. Step 5: Solve for x
    x = 3,978,746,864,281,443.50/72,698,132.88
  6. Step 6: Final answer
    x = 54,729,698.09

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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.