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Finding the Fourth Proportional to 58,279.55, 87,397.89 and 20,829.50

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Solution

The fourth proportional to 58,279.55, 87,397.89 and 20,829.50 is: 31,236.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,279.55 : 87,397.89 = 20,829.50 : x
  2. Step 2: Convert to fraction form
    58,279.55/87,397.89 = 20,829.50/x
  3. Step 3: Cross multiply
    58,279.55x = 87,397.89 × 20,829.50
  4. Step 4: Simplify right side
    58,279.55x = 1,820,454,349.76
  5. Step 5: Solve for x
    x = 1,820,454,349.76/58,279.55
  6. Step 6: Final answer
    x = 31,236.59

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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.