Home / 56,172.16-77,517.72-30,678.72

Finding the Fourth Proportional to 56,172.16, 77,517.72 and 30,678.72

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Solution

The fourth proportional to 56,172.16, 77,517.72 and 30,678.72 is: 42,336.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,172.16 : 77,517.72 = 30,678.72 : x
  2. Step 2: Convert to fraction form
    56,172.16/77,517.72 = 30,678.72/x
  3. Step 3: Cross multiply
    56,172.16x = 77,517.72 × 30,678.72
  4. Step 4: Simplify right side
    56,172.16x = 2,378,144,273.52
  5. Step 5: Solve for x
    x = 2,378,144,273.52/56,172.16
  6. Step 6: Final answer
    x = 42,336.71

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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.