Home / 54,159.60-81,287.40-31,945.20

Finding the Fourth Proportional to 54,159.60, 81,287.40 and 31,945.20

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Solution

The fourth proportional to 54,159.60, 81,287.40 and 31,945.20 is: 47,946.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,159.60 : 81,287.40 = 31,945.20 : x
  2. Step 2: Convert to fraction form
    54,159.60/81,287.40 = 31,945.20/x
  3. Step 3: Cross multiply
    54,159.60x = 81,287.40 × 31,945.20
  4. Step 4: Simplify right side
    54,159.60x = 2,596,742,250.48
  5. Step 5: Solve for x
    x = 2,596,742,250.48/54,159.60
  6. Step 6: Final answer
    x = 47,946.11

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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.