Home / 72,217.92-99,663.84-40,386.80

Finding the Fourth Proportional to 72,217.92, 99,663.84 and 40,386.80

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Solution

The fourth proportional to 72,217.92, 99,663.84 and 40,386.80 is: 55,735.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,217.92 : 99,663.84 = 40,386.80 : x
  2. Step 2: Convert to fraction form
    72,217.92/99,663.84 = 40,386.80/x
  3. Step 3: Cross multiply
    72,217.92x = 99,663.84 × 40,386.80
  4. Step 4: Simplify right side
    72,217.92x = 4,025,103,573.31
  5. Step 5: Solve for x
    x = 4,025,103,573.31/72,217.92
  6. Step 6: Final answer
    x = 55,735.52

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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.