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Finding the Fourth Proportional to 63,165.60, 94,731.90 and 18,780.40

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Solution

The fourth proportional to 63,165.60, 94,731.90 and 18,780.40 is: 28,165.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,165.60 : 94,731.90 = 18,780.40 : x
  2. Step 2: Convert to fraction form
    63,165.60/94,731.90 = 18,780.40/x
  3. Step 3: Cross multiply
    63,165.60x = 94,731.90 × 18,780.40
  4. Step 4: Simplify right side
    63,165.60x = 1,779,102,974.76
  5. Step 5: Solve for x
    x = 1,779,102,974.76/63,165.60
  6. Step 6: Final answer
    x = 28,165.69

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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.