Home / 72,878,767.78-100,572,684.68-39,839,154.62

Finding the Fourth Proportional to 72,878,767.78, 100,572,684.68 and 39,839,154.62

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Solution

The fourth proportional to 72,878,767.78, 100,572,684.68 and 39,839,154.62 is: 54,978,025.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,878,767.78 : 100,572,684.68 = 39,839,154.62 : x
  2. Step 2: Convert to fraction form
    72,878,767.78/100,572,684.68 = 39,839,154.62/x
  3. Step 3: Cross multiply
    72,878,767.78x = 100,572,684.68 × 39,839,154.62
  4. Step 4: Simplify right side
    72,878,767.78x = 4,006,730,735,515,025
  5. Step 5: Solve for x
    x = 4,006,730,735,515,025/72,878,767.78
  6. Step 6: Final answer
    x = 54,978,025.25

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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.