Home / 56,439.29-77,886.33-31,288.79

Finding the Fourth Proportional to 56,439.29, 77,886.33 and 31,288.79

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Solution

The fourth proportional to 56,439.29, 77,886.33 and 31,288.79 is: 43,178.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,439.29 : 77,886.33 = 31,288.79 : x
  2. Step 2: Convert to fraction form
    56,439.29/77,886.33 = 31,288.79/x
  3. Step 3: Cross multiply
    56,439.29x = 77,886.33 × 31,288.79
  4. Step 4: Simplify right side
    56,439.29x = 2,436,969,023.24
  5. Step 5: Solve for x
    x = 2,436,969,023.24/56,439.29
  6. Step 6: Final answer
    x = 43,178.59

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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.