Home / 72,220,138.00-99,663,983.61-39,180,387.13

Finding the Fourth Proportional to 72,220,138.00, 99,663,983.61 and 39,180,387.13

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Solution

The fourth proportional to 72,220,138.00, 99,663,983.61 and 39,180,387.13 is: 54,069,039.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220,138.00 : 99,663,983.61 = 39,180,387.13 : x
  2. Step 2: Convert to fraction form
    72,220,138.00/99,663,983.61 = 39,180,387.13/x
  3. Step 3: Cross multiply
    72,220,138.00x = 99,663,983.61 × 39,180,387.13
  4. Step 4: Simplify right side
    72,220,138.00x = 3,904,873,460,777,550
  5. Step 5: Solve for x
    x = 3,904,873,460,777,550/72,220,138.00
  6. Step 6: Final answer
    x = 54,069,039.04

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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.