Home / 71,500,078.07-98,669,711.11-40,138,118.75

Finding the Fourth Proportional to 71,500,078.07, 98,669,711.11 and 40,138,118.75

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Solution

The fourth proportional to 71,500,078.07, 98,669,711.11 and 40,138,118.75 is: 55,390,381.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,500,078.07 : 98,669,711.11 = 40,138,118.75 : x
  2. Step 2: Convert to fraction form
    71,500,078.07/98,669,711.11 = 40,138,118.75/x
  3. Step 3: Cross multiply
    71,500,078.07x = 98,669,711.11 × 40,138,118.75
  4. Step 4: Simplify right side
    71,500,078.07x = 3,960,416,581,561,374.50
  5. Step 5: Solve for x
    x = 3,960,416,581,561,374.50/71,500,078.07
  6. Step 6: Final answer
    x = 55,390,381.22

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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.