Home / 81,347.64-112,150.43-57,116.13

Finding the Fourth Proportional to 81,347.64, 112,150.43 and 57,116.13

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Solution

The fourth proportional to 81,347.64, 112,150.43 and 57,116.13 is: 78,743.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,347.64 : 112,150.43 = 57,116.13 : x
  2. Step 2: Convert to fraction form
    81,347.64/112,150.43 = 57,116.13/x
  3. Step 3: Cross multiply
    81,347.64x = 112,150.43 × 57,116.13
  4. Step 4: Simplify right side
    81,347.64x = 6,405,598,253.86
  5. Step 5: Solve for x
    x = 6,405,598,253.86/81,347.64
  6. Step 6: Final answer
    x = 78,743.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.