Home / 72,725,939.16-100,363,915.62-39,688,316.30

Finding the Fourth Proportional to 72,725,939.16, 100,363,915.62 and 39,688,316.30

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Solution

The fourth proportional to 72,725,939.16, 100,363,915.62 and 39,688,316.30 is: 54,771,033.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,725,939.16 : 100,363,915.62 = 39,688,316.30 : x
  2. Step 2: Convert to fraction form
    72,725,939.16/100,363,915.62 = 39,688,316.30/x
  3. Step 3: Cross multiply
    72,725,939.16x = 100,363,915.62 × 39,688,316.30
  4. Step 4: Simplify right side
    72,725,939.16x = 3,983,274,828,233,070.50
  5. Step 5: Solve for x
    x = 3,983,274,828,233,070.50/72,725,939.16
  6. Step 6: Final answer
    x = 54,771,033.20

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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.