Home / 86,937.60-130,406.40-40,281.60

Finding the Fourth Proportional to 86,937.60, 130,406.40 and 40,281.60

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Solution

The fourth proportional to 86,937.60, 130,406.40 and 40,281.60 is: 60,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,937.60 : 130,406.40 = 40,281.60 : x
  2. Step 2: Convert to fraction form
    86,937.60/130,406.40 = 40,281.60/x
  3. Step 3: Cross multiply
    86,937.60x = 130,406.40 × 40,281.60
  4. Step 4: Simplify right side
    86,937.60x = 5,252,978,442.24
  5. Step 5: Solve for x
    x = 5,252,978,442.24/86,937.60
  6. Step 6: Final answer
    x = 60,422.40

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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.