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Finding the Fourth Proportional to 58,687.70, 80,934.45 and 39,272.18

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Solution

The fourth proportional to 58,687.70, 80,934.45 and 39,272.18 is: 54,159.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,687.70 : 80,934.45 = 39,272.18 : x
  2. Step 2: Convert to fraction form
    58,687.70/80,934.45 = 39,272.18/x
  3. Step 3: Cross multiply
    58,687.70x = 80,934.45 × 39,272.18
  4. Step 4: Simplify right side
    58,687.70x = 3,178,472,288.60
  5. Step 5: Solve for x
    x = 3,178,472,288.60/58,687.70
  6. Step 6: Final answer
    x = 54,159.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.