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Finding the Fourth Proportional to 42,536.79, 63,811.02 and 14,449.30

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Solution

The fourth proportional to 42,536.79, 63,811.02 and 14,449.30 is: 21,675.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,536.79 : 63,811.02 = 14,449.30 : x
  2. Step 2: Convert to fraction form
    42,536.79/63,811.02 = 14,449.30/x
  3. Step 3: Cross multiply
    42,536.79x = 63,811.02 × 14,449.30
  4. Step 4: Simplify right side
    42,536.79x = 922,024,499.04
  5. Step 5: Solve for x
    x = 922,024,499.04/42,536.79
  6. Step 6: Final answer
    x = 21,675.93

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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.