Home / 86,750.10-130,125.15-42,405.30

Finding the Fourth Proportional to 86,750.10, 130,125.15 and 42,405.30

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Solution

The fourth proportional to 86,750.10, 130,125.15 and 42,405.30 is: 63,607.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,750.10 : 130,125.15 = 42,405.30 : x
  2. Step 2: Convert to fraction form
    86,750.10/130,125.15 = 42,405.30/x
  3. Step 3: Cross multiply
    86,750.10x = 130,125.15 × 42,405.30
  4. Step 4: Simplify right side
    86,750.10x = 5,517,996,023.30
  5. Step 5: Solve for x
    x = 5,517,996,023.30/86,750.10
  6. Step 6: Final answer
    x = 63,607.95

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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.