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Finding the Fourth Proportional to 86,402.76, 129,611.12 and 26,444.40

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Solution

The fourth proportional to 86,402.76, 129,611.12 and 26,444.40 is: 39,668.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,402.76 : 129,611.12 = 26,444.40 : x
  2. Step 2: Convert to fraction form
    86,402.76/129,611.12 = 26,444.40/x
  3. Step 3: Cross multiply
    86,402.76x = 129,611.12 × 26,444.40
  4. Step 4: Simplify right side
    86,402.76x = 3,427,488,301.73
  5. Step 5: Solve for x
    x = 3,427,488,301.73/86,402.76
  6. Step 6: Final answer
    x = 39,668.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.