Home / 81,515.80-112,497.18-45,708.10

Finding the Fourth Proportional to 81,515.80, 112,497.18 and 45,708.10

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Solution

The fourth proportional to 81,515.80, 112,497.18 and 45,708.10 is: 63,080.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,515.80 : 112,497.18 = 45,708.10 : x
  2. Step 2: Convert to fraction form
    81,515.80/112,497.18 = 45,708.10/x
  3. Step 3: Cross multiply
    81,515.80x = 112,497.18 × 45,708.10
  4. Step 4: Simplify right side
    81,515.80x = 5,142,032,353.16
  5. Step 5: Solve for x
    x = 5,142,032,353.16/81,515.80
  6. Step 6: Final answer
    x = 63,080.19

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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.