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Finding the Fourth Proportional to 72,438.76, 108,657.60 and 22,518.76

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Solution

The fourth proportional to 72,438.76, 108,657.60 and 22,518.76 is: 33,777.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,438.76 : 108,657.60 = 22,518.76 : x
  2. Step 2: Convert to fraction form
    72,438.76/108,657.60 = 22,518.76/x
  3. Step 3: Cross multiply
    72,438.76x = 108,657.60 × 22,518.76
  4. Step 4: Simplify right side
    72,438.76x = 2,446,834,390.89
  5. Step 5: Solve for x
    x = 2,446,834,390.89/72,438.76
  6. Step 6: Final answer
    x = 33,777.97

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1.5x scale

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.