Home / 86,646.20-129,981.68-26,679.74

Finding the Fourth Proportional to 86,646.20, 129,981.68 and 26,679.74

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Solution

The fourth proportional to 86,646.20, 129,981.68 and 26,679.74 is: 40,023.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,646.20 : 129,981.68 = 26,679.74 : x
  2. Step 2: Convert to fraction form
    86,646.20/129,981.68 = 26,679.74/x
  3. Step 3: Cross multiply
    86,646.20x = 129,981.68 × 26,679.74
  4. Step 4: Simplify right side
    86,646.20x = 3,467,876,643.86
  5. Step 5: Solve for x
    x = 3,467,876,643.86/86,646.20
  6. Step 6: Final answer
    x = 40,023.42

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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.