Home / 81,425.12-112,366-45,615.47

Finding the Fourth Proportional to 81,425.12, 112,366 and 45,615.47

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Solution

The fourth proportional to 81,425.12, 112,366 and 45,615.47 is: 62,948.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,425.12 : 112,366 = 45,615.47 : x
  2. Step 2: Convert to fraction form
    81,425.12/112,366 = 45,615.47/x
  3. Step 3: Cross multiply
    81,425.12x = 112,366 × 45,615.47
  4. Step 4: Simplify right side
    81,425.12x = 5,125,627,902.02
  5. Step 5: Solve for x
    x = 5,125,627,902.02/81,425.12
  6. Step 6: Final answer
    x = 62,948.98

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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.