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Finding the Fourth Proportional to 66,680.76, 92,030.84 and 38,402.88

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Solution

The fourth proportional to 66,680.76, 92,030.84 and 38,402.88 is: 53,002.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,680.76 : 92,030.84 = 38,402.88 : x
  2. Step 2: Convert to fraction form
    66,680.76/92,030.84 = 38,402.88/x
  3. Step 3: Cross multiply
    66,680.76x = 92,030.84 × 38,402.88
  4. Step 4: Simplify right side
    66,680.76x = 3,534,249,304.82
  5. Step 5: Solve for x
    x = 3,534,249,304.82/66,680.76
  6. Step 6: Final answer
    x = 53,002.53

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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.