Home / 56,940.20-85,410.30-15,387.20

Finding the Fourth Proportional to 56,940.20, 85,410.30 and 15,387.20

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Solution

The fourth proportional to 56,940.20, 85,410.30 and 15,387.20 is: 23,080.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,940.20 : 85,410.30 = 15,387.20 : x
  2. Step 2: Convert to fraction form
    56,940.20/85,410.30 = 15,387.20/x
  3. Step 3: Cross multiply
    56,940.20x = 85,410.30 × 15,387.20
  4. Step 4: Simplify right side
    56,940.20x = 1,314,225,368.16
  5. Step 5: Solve for x
    x = 1,314,225,368.16/56,940.20
  6. Step 6: Final answer
    x = 23,080.80

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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.