Home / 72,345.04-99,842.70-40,082.76

Finding the Fourth Proportional to 72,345.04, 99,842.70 and 40,082.76

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Solution

The fourth proportional to 72,345.04, 99,842.70 and 40,082.76 is: 55,317.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,345.04 : 99,842.70 = 40,082.76 : x
  2. Step 2: Convert to fraction form
    72,345.04/99,842.70 = 40,082.76/x
  3. Step 3: Cross multiply
    72,345.04x = 99,842.70 × 40,082.76
  4. Step 4: Simplify right side
    72,345.04x = 4,001,970,981.85
  5. Step 5: Solve for x
    x = 4,001,970,981.85/72,345.04
  6. Step 6: Final answer
    x = 55,317.83

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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.