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Finding the Fourth Proportional to 81,207.47, 112,066.47 and 45,397.51

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Solution

The fourth proportional to 81,207.47, 112,066.47 and 45,397.51 is: 62,648.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,207.47 : 112,066.47 = 45,397.51 : x
  2. Step 2: Convert to fraction form
    81,207.47/112,066.47 = 45,397.51/x
  3. Step 3: Cross multiply
    81,207.47x = 112,066.47 × 45,397.51
  4. Step 4: Simplify right side
    81,207.47x = 5,087,538,412.32
  5. Step 5: Solve for x
    x = 5,087,538,412.32/81,207.47
  6. Step 6: Final answer
    x = 62,648.65

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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.