Home / 56,081.68-77,388.14-30,931.20

Finding the Fourth Proportional to 56,081.68, 77,388.14 and 30,931.20

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Solution

The fourth proportional to 56,081.68, 77,388.14 and 30,931.20 is: 42,682.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,081.68 : 77,388.14 = 30,931.20 : x
  2. Step 2: Convert to fraction form
    56,081.68/77,388.14 = 30,931.20/x
  3. Step 3: Cross multiply
    56,081.68x = 77,388.14 × 30,931.20
  4. Step 4: Simplify right side
    56,081.68x = 2,393,708,035.97
  5. Step 5: Solve for x
    x = 2,393,708,035.97/56,081.68
  6. Step 6: Final answer
    x = 42,682.53

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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.