Home / 81,342.40-112,173.66-63,430.88

Finding the Fourth Proportional to 81,342.40, 112,173.66 and 63,430.88

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Solution

The fourth proportional to 81,342.40, 112,173.66 and 63,430.88 is: 87,473.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,342.40 : 112,173.66 = 63,430.88 : x
  2. Step 2: Convert to fraction form
    81,342.40/112,173.66 = 63,430.88/x
  3. Step 3: Cross multiply
    81,342.40x = 112,173.66 × 63,430.88
  4. Step 4: Simplify right side
    81,342.40x = 7,115,273,966.62
  5. Step 5: Solve for x
    x = 7,115,273,966.62/81,342.40
  6. Step 6: Final answer
    x = 87,473.13

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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.