Home / 86,079.16-129,111.45-29,904.85

Finding the Fourth Proportional to 86,079.16, 129,111.45 and 29,904.85

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Solution

The fourth proportional to 86,079.16, 129,111.45 and 29,904.85 is: 44,854.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,079.16 : 129,111.45 = 29,904.85 : x
  2. Step 2: Convert to fraction form
    86,079.16/129,111.45 = 29,904.85/x
  3. Step 3: Cross multiply
    86,079.16x = 129,111.45 × 29,904.85
  4. Step 4: Simplify right side
    86,079.16x = 3,861,058,545.53
  5. Step 5: Solve for x
    x = 3,861,058,545.53/86,079.16
  6. Step 6: Final answer
    x = 44,854.74

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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.