Home / 72,725,921.13-100,363,890.63-39,688,298.25

Finding the Fourth Proportional to 72,725,921.13, 100,363,890.63 and 39,688,298.25

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Solution

The fourth proportional to 72,725,921.13, 100,363,890.63 and 39,688,298.25 is: 54,771,008.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,725,921.13 : 100,363,890.63 = 39,688,298.25 : x
  2. Step 2: Convert to fraction form
    72,725,921.13/100,363,890.63 = 39,688,298.25/x
  3. Step 3: Cross multiply
    72,725,921.13x = 100,363,890.63 × 39,688,298.25
  4. Step 4: Simplify right side
    72,725,921.13x = 3,983,272,024,853,820
  5. Step 5: Solve for x
    x = 3,983,272,024,853,820/72,725,921.13
  6. Step 6: Final answer
    x = 54,771,008.23

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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.