Home / 86,257.13-129,402.03-30,113.27

Finding the Fourth Proportional to 86,257.13, 129,402.03 and 30,113.27

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Solution

The fourth proportional to 86,257.13, 129,402.03 and 30,113.27 is: 45,175.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,257.13 : 129,402.03 = 30,113.27 : x
  2. Step 2: Convert to fraction form
    86,257.13/129,402.03 = 30,113.27/x
  3. Step 3: Cross multiply
    86,257.13x = 129,402.03 × 30,113.27
  4. Step 4: Simplify right side
    86,257.13x = 3,896,717,620.93
  5. Step 5: Solve for x
    x = 3,896,717,620.93/86,257.13
  6. Step 6: Final answer
    x = 45,175.60

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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.