Home / 71,512.10-98,686.86-39,681.08

Finding the Fourth Proportional to 71,512.10, 98,686.86 and 39,681.08

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Solution

The fourth proportional to 71,512.10, 98,686.86 and 39,681.08 is: 54,759.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,512.10 : 98,686.86 = 39,681.08 : x
  2. Step 2: Convert to fraction form
    71,512.10/98,686.86 = 39,681.08/x
  3. Step 3: Cross multiply
    71,512.10x = 98,686.86 × 39,681.08
  4. Step 4: Simplify right side
    71,512.10x = 3,916,001,186.61
  5. Step 5: Solve for x
    x = 3,916,001,186.61/71,512.10
  6. Step 6: Final answer
    x = 54,759.98

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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.