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Finding the Fourth Proportional to 66,314.66, 91,503.95 and 38,014.88

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Solution

The fourth proportional to 66,314.66, 91,503.95 and 38,014.88 is: 52,454.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,314.66 : 91,503.95 = 38,014.88 : x
  2. Step 2: Convert to fraction form
    66,314.66/91,503.95 = 38,014.88/x
  3. Step 3: Cross multiply
    66,314.66x = 91,503.95 × 38,014.88
  4. Step 4: Simplify right side
    66,314.66x = 3,478,511,031.18
  5. Step 5: Solve for x
    x = 3,478,511,031.18/66,314.66
  6. Step 6: Final answer
    x = 52,454.64

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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.