Home / 72,143.96-99,556.76-40,313.12

Finding the Fourth Proportional to 72,143.96, 99,556.76 and 40,313.12

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Solution

The fourth proportional to 72,143.96, 99,556.76 and 40,313.12 is: 55,631.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,143.96 : 99,556.76 = 40,313.12 : x
  2. Step 2: Convert to fraction form
    72,143.96/99,556.76 = 40,313.12/x
  3. Step 3: Cross multiply
    72,143.96x = 99,556.76 × 40,313.12
  4. Step 4: Simplify right side
    72,143.96x = 4,013,443,411.13
  5. Step 5: Solve for x
    x = 4,013,443,411.13/72,143.96
  6. Step 6: Final answer
    x = 55,631.04

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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.