Home / 81,397.31-112,323.11-45,587.00

Finding the Fourth Proportional to 81,397.31, 112,323.11 and 45,587.00

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Solution

The fourth proportional to 81,397.31, 112,323.11 and 45,587.00 is: 62,907.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,397.31 : 112,323.11 = 45,587.00 : x
  2. Step 2: Convert to fraction form
    81,397.31/112,323.11 = 45,587.00/x
  3. Step 3: Cross multiply
    81,397.31x = 112,323.11 × 45,587.00
  4. Step 4: Simplify right side
    81,397.31x = 5,120,473,668.44
  5. Step 5: Solve for x
    x = 5,120,473,668.44/81,397.31
  6. Step 6: Final answer
    x = 62,907.16

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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.