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Finding the Fourth Proportional to 66,650.68, 91,987.95 and 38,350.90

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Solution

The fourth proportional to 66,650.68, 91,987.95 and 38,350.90 is: 52,930.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,650.68 : 91,987.95 = 38,350.90 : x
  2. Step 2: Convert to fraction form
    66,650.68/91,987.95 = 38,350.90/x
  3. Step 3: Cross multiply
    66,650.68x = 91,987.95 × 38,350.90
  4. Step 4: Simplify right side
    66,650.68x = 3,527,820,671.66
  5. Step 5: Solve for x
    x = 3,527,820,671.66/66,650.68
  6. Step 6: Final answer
    x = 52,930.00

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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.