Home / 55,902.72-77,143.68-40,013.76

Finding the Fourth Proportional to 55,902.72, 77,143.68 and 40,013.76

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Solution

The fourth proportional to 55,902.72, 77,143.68 and 40,013.76 is: 55,217.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,902.72 : 77,143.68 = 40,013.76 : x
  2. Step 2: Convert to fraction form
    55,902.72/77,143.68 = 40,013.76/x
  3. Step 3: Cross multiply
    55,902.72x = 77,143.68 × 40,013.76
  4. Step 4: Simplify right side
    55,902.72x = 3,086,808,697.04
  5. Step 5: Solve for x
    x = 3,086,808,697.04/55,902.72
  6. Step 6: Final answer
    x = 55,217.50

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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.