Home / 77,068,191.80-115,700,938.69-66,207,862.82

Finding the Fourth Proportional to 77,068,191.80, 115,700,938.69 and 66,207,862.82

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Solution

The fourth proportional to 77,068,191.80, 115,700,938.69 and 66,207,862.82 is: 99,396,543.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,068,191.80 : 115,700,938.69 = 66,207,862.82 : x
  2. Step 2: Convert to fraction form
    77,068,191.80/115,700,938.69 = 66,207,862.82/x
  3. Step 3: Cross multiply
    77,068,191.80x = 115,700,938.69 × 66,207,862.82
  4. Step 4: Simplify right side
    77,068,191.80x = 7,660,311,876,932,750
  5. Step 5: Solve for x
    x = 7,660,311,876,932,750/77,068,191.80
  6. Step 6: Final answer
    x = 99,396,543.48

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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.