Home / 65,921,139.20-98,811,724.80-31,820,268.80

Finding the Fourth Proportional to 65,921,139.20, 98,811,724.80 and 31,820,268.80

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Solution

The fourth proportional to 65,921,139.20, 98,811,724.80 and 31,820,268.80 is: 47,696,621.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,921,139.20 : 98,811,724.80 = 31,820,268.80 : x
  2. Step 2: Convert to fraction form
    65,921,139.20/98,811,724.80 = 31,820,268.80/x
  3. Step 3: Cross multiply
    65,921,139.20x = 98,811,724.80 × 31,820,268.80
  4. Step 4: Simplify right side
    65,921,139.20x = 3,144,215,643,727,626
  5. Step 5: Solve for x
    x = 3,144,215,643,727,626/65,921,139.20
  6. Step 6: Final answer
    x = 47,696,621.78

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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.