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Finding the Fourth Proportional to 64,372.80, 88,877.88 and 40,210.68

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Solution

The fourth proportional to 64,372.80, 88,877.88 and 40,210.68 is: 55,517.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,372.80 : 88,877.88 = 40,210.68 : x
  2. Step 2: Convert to fraction form
    64,372.80/88,877.88 = 40,210.68/x
  3. Step 3: Cross multiply
    64,372.80x = 88,877.88 × 40,210.68
  4. Step 4: Simplify right side
    64,372.80x = 3,573,839,991.76
  5. Step 5: Solve for x
    x = 3,573,839,991.76/64,372.80
  6. Step 6: Final answer
    x = 55,517.86

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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.