Home / 83,121,812.70-124,684,857.45-39,392,310.30

Finding the Fourth Proportional to 83,121,812.70, 124,684,857.45 and 39,392,310.30

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Solution

The fourth proportional to 83,121,812.70, 124,684,857.45 and 39,392,310.30 is: 59,089,478.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,121,812.70 : 124,684,857.45 = 39,392,310.30 : x
  2. Step 2: Convert to fraction form
    83,121,812.70/124,684,857.45 = 39,392,310.30/x
  3. Step 3: Cross multiply
    83,121,812.70x = 124,684,857.45 × 39,392,310.30
  4. Step 4: Simplify right side
    83,121,812.70x = 4,911,624,594,381,666
  5. Step 5: Solve for x
    x = 4,911,624,594,381,666/83,121,812.70
  6. Step 6: Final answer
    x = 59,089,478.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.