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Finding the Fourth Proportional to 81,398.58, 112,323.88 and 45,580.38

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Solution

The fourth proportional to 81,398.58, 112,323.88 and 45,580.38 is: 62,897.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,398.58 : 112,323.88 = 45,580.38 : x
  2. Step 2: Convert to fraction form
    81,398.58/112,323.88 = 45,580.38/x
  3. Step 3: Cross multiply
    81,398.58x = 112,323.88 × 45,580.38
  4. Step 4: Simplify right side
    81,398.58x = 5,119,765,133.47
  5. Step 5: Solve for x
    x = 5,119,765,133.47/81,398.58
  6. Step 6: Final answer
    x = 62,897.47

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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.