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Finding the Fourth Proportional to 65,248.60, 90,041.54 and 38,392.85

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Solution

The fourth proportional to 65,248.60, 90,041.54 and 38,392.85 is: 52,981.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,248.60 : 90,041.54 = 38,392.85 : x
  2. Step 2: Convert to fraction form
    65,248.60/90,041.54 = 38,392.85/x
  3. Step 3: Cross multiply
    65,248.60x = 90,041.54 × 38,392.85
  4. Step 4: Simplify right side
    65,248.60x = 3,456,951,338.99
  5. Step 5: Solve for x
    x = 3,456,951,338.99/65,248.60
  6. Step 6: Final answer
    x = 52,981.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.