Home / 56,717.68-78,139.36-40,774.56

Finding the Fourth Proportional to 56,717.68, 78,139.36 and 40,774.56

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Solution

The fourth proportional to 56,717.68, 78,139.36 and 40,774.56 is: 56,174.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,717.68 : 78,139.36 = 40,774.56 : x
  2. Step 2: Convert to fraction form
    56,717.68/78,139.36 = 40,774.56/x
  3. Step 3: Cross multiply
    56,717.68x = 78,139.36 × 40,774.56
  4. Step 4: Simplify right side
    56,717.68x = 3,186,098,022.68
  5. Step 5: Solve for x
    x = 3,186,098,022.68/56,717.68
  6. Step 6: Final answer
    x = 56,174.69

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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.