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Finding the Fourth Proportional to 56,480.76, 77,952.78 and 31,338.36

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Solution

The fourth proportional to 56,480.76, 77,952.78 and 31,338.36 is: 43,252.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,480.76 : 77,952.78 = 31,338.36 : x
  2. Step 2: Convert to fraction form
    56,480.76/77,952.78 = 31,338.36/x
  3. Step 3: Cross multiply
    56,480.76x = 77,952.78 × 31,338.36
  4. Step 4: Simplify right side
    56,480.76x = 2,442,912,282.64
  5. Step 5: Solve for x
    x = 2,442,912,282.64/56,480.76
  6. Step 6: Final answer
    x = 43,252.11

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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.