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Finding the Fourth Proportional to 58,390, 87,598.80 and 18,947.04

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Solution

The fourth proportional to 58,390, 87,598.80 and 18,947.04 is: 28,425.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,390 : 87,598.80 = 18,947.04 : x
  2. Step 2: Convert to fraction form
    58,390/87,598.80 = 18,947.04/x
  3. Step 3: Cross multiply
    58,390x = 87,598.80 × 18,947.04
  4. Step 4: Simplify right side
    58,390x = 1,659,737,967.55
  5. Step 5: Solve for x
    x = 1,659,737,967.55/58,390
  6. Step 6: Final answer
    x = 28,425.04

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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.