Home / 56,418.40-77,857.20-31,267.90

Finding the Fourth Proportional to 56,418.40, 77,857.20 and 31,267.90

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Solution

The fourth proportional to 56,418.40, 77,857.20 and 31,267.90 is: 43,149.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,418.40 : 77,857.20 = 31,267.90 : x
  2. Step 2: Convert to fraction form
    56,418.40/77,857.20 = 31,267.90/x
  3. Step 3: Cross multiply
    56,418.40x = 77,857.20 × 31,267.90
  4. Step 4: Simplify right side
    56,418.40x = 2,434,431,143.88
  5. Step 5: Solve for x
    x = 2,434,431,143.88/56,418.40
  6. Step 6: Final answer
    x = 43,149.60

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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.