Home / 86,291,586.66-129,437,381.06-20,712,724.24

Finding the Fourth Proportional to 86,291,586.66, 129,437,381.06 and 20,712,724.24

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Solution

The fourth proportional to 86,291,586.66, 129,437,381.06 and 20,712,724.24 is: 31,069,086.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,291,586.66 : 129,437,381.06 = 20,712,724.24 : x
  2. Step 2: Convert to fraction form
    86,291,586.66/129,437,381.06 = 20,712,724.24/x
  3. Step 3: Cross multiply
    86,291,586.66x = 129,437,381.06 × 20,712,724.24
  4. Step 4: Simplify right side
    86,291,586.66x = 2,681,000,780,253,195
  5. Step 5: Solve for x
    x = 2,681,000,780,253,195/86,291,586.66
  6. Step 6: Final answer
    x = 31,069,086.62

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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.