Home / 71,535.12-98,713.80-39,702.48

Finding the Fourth Proportional to 71,535.12, 98,713.80 and 39,702.48

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Solution

The fourth proportional to 71,535.12, 98,713.80 and 39,702.48 is: 54,786.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,535.12 : 98,713.80 = 39,702.48 : x
  2. Step 2: Convert to fraction form
    71,535.12/98,713.80 = 39,702.48/x
  3. Step 3: Cross multiply
    71,535.12x = 98,713.80 × 39,702.48
  4. Step 4: Simplify right side
    71,535.12x = 3,919,182,670.22
  5. Step 5: Solve for x
    x = 3,919,182,670.22/71,535.12
  6. Step 6: Final answer
    x = 54,786.83

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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.