Home / 86,575.18-129,870.20-30,410.41

Finding the Fourth Proportional to 86,575.18, 129,870.20 and 30,410.41

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Solution

The fourth proportional to 86,575.18, 129,870.20 and 30,410.41 is: 45,618.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,575.18 : 129,870.20 = 30,410.41 : x
  2. Step 2: Convert to fraction form
    86,575.18/129,870.20 = 30,410.41/x
  3. Step 3: Cross multiply
    86,575.18x = 129,870.20 × 30,410.41
  4. Step 4: Simplify right side
    86,575.18x = 3,949,406,028.78
  5. Step 5: Solve for x
    x = 3,949,406,028.78/86,575.18
  6. Step 6: Final answer
    x = 45,618.22

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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.