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Finding the Fourth Proportional to 42,558.60, 63,848.04 and 21,446.76

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Solution

The fourth proportional to 42,558.60, 63,848.04 and 21,446.76 is: 32,175.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,558.60 : 63,848.04 = 21,446.76 : x
  2. Step 2: Convert to fraction form
    42,558.60/63,848.04 = 21,446.76/x
  3. Step 3: Cross multiply
    42,558.60x = 63,848.04 × 21,446.76
  4. Step 4: Simplify right side
    42,558.60x = 1,369,333,590.35
  5. Step 5: Solve for x
    x = 1,369,333,590.35/42,558.60
  6. Step 6: Final answer
    x = 32,175.25

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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.