Home / 56,752.12-78,317-31,260.92

Finding the Fourth Proportional to 56,752.12, 78,317 and 31,260.92

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Solution

The fourth proportional to 56,752.12, 78,317 and 31,260.92 is: 43,139.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,752.12 : 78,317 = 31,260.92 : x
  2. Step 2: Convert to fraction form
    56,752.12/78,317 = 31,260.92/x
  3. Step 3: Cross multiply
    56,752.12x = 78,317 × 31,260.92
  4. Step 4: Simplify right side
    56,752.12x = 2,448,261,471.64
  5. Step 5: Solve for x
    x = 2,448,261,471.64/56,752.12
  6. Step 6: Final answer
    x = 43,139.56

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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.