Home / 72,125.92-99,535.80-40,298.32

Finding the Fourth Proportional to 72,125.92, 99,535.80 and 40,298.32

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Solution

The fourth proportional to 72,125.92, 99,535.80 and 40,298.32 is: 55,612.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,125.92 : 99,535.80 = 40,298.32 : x
  2. Step 2: Convert to fraction form
    72,125.92/99,535.80 = 40,298.32/x
  3. Step 3: Cross multiply
    72,125.92x = 99,535.80 × 40,298.32
  4. Step 4: Simplify right side
    72,125.92x = 4,011,125,519.86
  5. Step 5: Solve for x
    x = 4,011,125,519.86/72,125.92
  6. Step 6: Final answer
    x = 55,612.82

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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.