Home / 71,702.07-98,944.77-39,870.28

Finding the Fourth Proportional to 71,702.07, 98,944.77 and 39,870.28

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Solution

The fourth proportional to 71,702.07, 98,944.77 and 39,870.28 is: 55,018.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,702.07 : 98,944.77 = 39,870.28 : x
  2. Step 2: Convert to fraction form
    71,702.07/98,944.77 = 39,870.28/x
  3. Step 3: Cross multiply
    71,702.07x = 98,944.77 × 39,870.28
  4. Step 4: Simplify right side
    71,702.07x = 3,944,955,684.44
  5. Step 5: Solve for x
    x = 3,944,955,684.44/71,702.07
  6. Step 6: Final answer
    x = 55,018.71

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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.