Home / 72,100.13-107,999.38-57,983.72

Finding the Fourth Proportional to 72,100.13, 107,999.38 and 57,983.72

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Solution

The fourth proportional to 72,100.13, 107,999.38 and 57,983.72 is: 86,854.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,100.13 : 107,999.38 = 57,983.72 : x
  2. Step 2: Convert to fraction form
    72,100.13/107,999.38 = 57,983.72/x
  3. Step 3: Cross multiply
    72,100.13x = 107,999.38 × 57,983.72
  4. Step 4: Simplify right side
    72,100.13x = 6,262,205,125.14
  5. Step 5: Solve for x
    x = 6,262,205,125.14/72,100.13
  6. Step 6: Final answer
    x = 86,854.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.