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Finding the Fourth Proportional to 87,349.61, 130,890.77 and 58,780.77

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Solution

The fourth proportional to 87,349.61, 130,890.77 and 58,780.77 is: 88,081.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,349.61 : 130,890.77 = 58,780.77 : x
  2. Step 2: Convert to fraction form
    87,349.61/130,890.77 = 58,780.77/x
  3. Step 3: Cross multiply
    87,349.61x = 130,890.77 × 58,780.77
  4. Step 4: Simplify right side
    87,349.61x = 7,693,859,682.18
  5. Step 5: Solve for x
    x = 7,693,859,682.18/87,349.61
  6. Step 6: Final answer
    x = 88,081.21

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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.