Home / 72,144.46-99,557.45-40,313.62

Finding the Fourth Proportional to 72,144.46, 99,557.45 and 40,313.62

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Solution

The fourth proportional to 72,144.46, 99,557.45 and 40,313.62 is: 55,631.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,144.46 : 99,557.45 = 40,313.62 : x
  2. Step 2: Convert to fraction form
    72,144.46/99,557.45 = 40,313.62/x
  3. Step 3: Cross multiply
    72,144.46x = 99,557.45 × 40,313.62
  4. Step 4: Simplify right side
    72,144.46x = 4,013,521,005.90
  5. Step 5: Solve for x
    x = 4,013,521,005.90/72,144.46
  6. Step 6: Final answer
    x = 55,631.73

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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.