Home / 56,645.32-78,163.66-31,147.48

Finding the Fourth Proportional to 56,645.32, 78,163.66 and 31,147.48

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Solution

The fourth proportional to 56,645.32, 78,163.66 and 31,147.48 is: 42,979.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,645.32 : 78,163.66 = 31,147.48 : x
  2. Step 2: Convert to fraction form
    56,645.32/78,163.66 = 31,147.48/x
  3. Step 3: Cross multiply
    56,645.32x = 78,163.66 × 31,147.48
  4. Step 4: Simplify right side
    56,645.32x = 2,434,601,036.58
  5. Step 5: Solve for x
    x = 2,434,601,036.58/56,645.32
  6. Step 6: Final answer
    x = 42,979.74

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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.