Home / 71,971,711.20-107,957,566.80-65,029,298.40

Finding the Fourth Proportional to 71,971,711.20, 107,957,566.80 and 65,029,298.40

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Solution

The fourth proportional to 71,971,711.20, 107,957,566.80 and 65,029,298.40 is: 97,543,947.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,971,711.20 : 107,957,566.80 = 65,029,298.40 : x
  2. Step 2: Convert to fraction form
    71,971,711.20/107,957,566.80 = 65,029,298.40/x
  3. Step 3: Cross multiply
    71,971,711.20x = 107,957,566.80 × 65,029,298.40
  4. Step 4: Simplify right side
    71,971,711.20x = 7,020,404,825,975,133
  5. Step 5: Solve for x
    x = 7,020,404,825,975,133/71,971,711.20
  6. Step 6: Final answer
    x = 97,543,947.60

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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.