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Finding the Fourth Proportional to 42,348.52, 63,506.08 and 18,657.08

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Solution

The fourth proportional to 42,348.52, 63,506.08 and 18,657.08 is: 27,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,348.52 : 63,506.08 = 18,657.08 : x
  2. Step 2: Convert to fraction form
    42,348.52/63,506.08 = 18,657.08/x
  3. Step 3: Cross multiply
    42,348.52x = 63,506.08 × 18,657.08
  4. Step 4: Simplify right side
    42,348.52x = 1,184,838,211.26
  5. Step 5: Solve for x
    x = 1,184,838,211.26/42,348.52
  6. Step 6: Final answer
    x = 27,978.27

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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.