Home / 86,316.03-129,474.45-30,155.90

Finding the Fourth Proportional to 86,316.03, 129,474.45 and 30,155.90

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Solution

The fourth proportional to 86,316.03, 129,474.45 and 30,155.90 is: 45,233.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,316.03 : 129,474.45 = 30,155.90 : x
  2. Step 2: Convert to fraction form
    86,316.03/129,474.45 = 30,155.90/x
  3. Step 3: Cross multiply
    86,316.03x = 129,474.45 × 30,155.90
  4. Step 4: Simplify right side
    86,316.03x = 3,904,417,919.38
  5. Step 5: Solve for x
    x = 3,904,417,919.38/86,316.03
  6. Step 6: Final answer
    x = 45,233.98

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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.