Home / 86,071.39-129,121.66-26,895.42

Finding the Fourth Proportional to 86,071.39, 129,121.66 and 26,895.42

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Solution

The fourth proportional to 86,071.39, 129,121.66 and 26,895.42 is: 40,347.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,071.39 : 129,121.66 = 26,895.42 : x
  2. Step 2: Convert to fraction form
    86,071.39/129,121.66 = 26,895.42/x
  3. Step 3: Cross multiply
    86,071.39x = 129,121.66 × 26,895.42
  4. Step 4: Simplify right side
    86,071.39x = 3,472,781,276.80
  5. Step 5: Solve for x
    x = 3,472,781,276.80/86,071.39
  6. Step 6: Final answer
    x = 40,347.68

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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.