Home / 81,218.43-112,072.28-45,407.25

Finding the Fourth Proportional to 81,218.43, 112,072.28 and 45,407.25

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Solution

The fourth proportional to 81,218.43, 112,072.28 and 45,407.25 is: 62,656.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,218.43 : 112,072.28 = 45,407.25 : x
  2. Step 2: Convert to fraction form
    81,218.43/112,072.28 = 45,407.25/x
  3. Step 3: Cross multiply
    81,218.43x = 112,072.28 × 45,407.25
  4. Step 4: Simplify right side
    81,218.43x = 5,088,893,808.99
  5. Step 5: Solve for x
    x = 5,088,893,808.99/81,218.43
  6. Step 6: Final answer
    x = 62,656.88

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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.