Home / 72,879.19-100,572.38-42,680.22

Finding the Fourth Proportional to 72,879.19, 100,572.38 and 42,680.22

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Solution

The fourth proportional to 72,879.19, 100,572.38 and 42,680.22 is: 58,898.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,879.19 : 100,572.38 = 42,680.22 : x
  2. Step 2: Convert to fraction form
    72,879.19/100,572.38 = 42,680.22/x
  3. Step 3: Cross multiply
    72,879.19x = 100,572.38 × 42,680.22
  4. Step 4: Simplify right side
    72,879.19x = 4,292,451,113.90
  5. Step 5: Solve for x
    x = 4,292,451,113.90/72,879.19
  6. Step 6: Final answer
    x = 58,898.17

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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.