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Finding the Fourth Proportional to 86,687.70, 129,743.55 and 62,927.70

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Solution

The fourth proportional to 86,687.70, 129,743.55 and 62,927.70 is: 94,182.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,687.70 : 129,743.55 = 62,927.70 : x
  2. Step 2: Convert to fraction form
    86,687.70/129,743.55 = 62,927.70/x
  3. Step 3: Cross multiply
    86,687.70x = 129,743.55 × 62,927.70
  4. Step 4: Simplify right side
    86,687.70x = 8,164,463,191.34
  5. Step 5: Solve for x
    x = 8,164,463,191.34/86,687.70
  6. Step 6: Final answer
    x = 94,182.49

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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.