Home / 86,451.12-129,671.82-30,269.52

Finding the Fourth Proportional to 86,451.12, 129,671.82 and 30,269.52

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Solution

The fourth proportional to 86,451.12, 129,671.82 and 30,269.52 is: 45,402.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,451.12 : 129,671.82 = 30,269.52 : x
  2. Step 2: Convert to fraction form
    86,451.12/129,671.82 = 30,269.52/x
  3. Step 3: Cross multiply
    86,451.12x = 129,671.82 × 30,269.52
  4. Step 4: Simplify right side
    86,451.12x = 3,925,103,748.93
  5. Step 5: Solve for x
    x = 3,925,103,748.93/86,451.12
  6. Step 6: Final answer
    x = 45,402.58

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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.