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Finding the Fourth Proportional to 72,633.60, 108,658.80 and 62,881.20

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Solution

The fourth proportional to 72,633.60, 108,658.80 and 62,881.20 is: 94,069.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,633.60 : 108,658.80 = 62,881.20 : x
  2. Step 2: Convert to fraction form
    72,633.60/108,658.80 = 62,881.20/x
  3. Step 3: Cross multiply
    72,633.60x = 108,658.80 × 62,881.20
  4. Step 4: Simplify right side
    72,633.60x = 6,832,595,734.56
  5. Step 5: Solve for x
    x = 6,832,595,734.56/72,633.60
  6. Step 6: Final answer
    x = 94,069.35

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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.