Home / 56,478.24-77,940.57-30,984.66

Finding the Fourth Proportional to 56,478.24, 77,940.57 and 30,984.66

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Solution

The fourth proportional to 56,478.24, 77,940.57 and 30,984.66 is: 42,759.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,478.24 : 77,940.57 = 30,984.66 : x
  2. Step 2: Convert to fraction form
    56,478.24/77,940.57 = 30,984.66/x
  3. Step 3: Cross multiply
    56,478.24x = 77,940.57 × 30,984.66
  4. Step 4: Simplify right side
    56,478.24x = 2,414,962,061.66
  5. Step 5: Solve for x
    x = 2,414,962,061.66/56,478.24
  6. Step 6: Final answer
    x = 42,759.16

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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.