Home / 56,640.39-78,165.75-31,148.69

Finding the Fourth Proportional to 56,640.39, 78,165.75 and 31,148.69

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Solution

The fourth proportional to 56,640.39, 78,165.75 and 31,148.69 is: 42,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,640.39 : 78,165.75 = 31,148.69 : x
  2. Step 2: Convert to fraction form
    56,640.39/78,165.75 = 31,148.69/x
  3. Step 3: Cross multiply
    56,640.39x = 78,165.75 × 31,148.69
  4. Step 4: Simplify right side
    56,640.39x = 2,434,760,873.80
  5. Step 5: Solve for x
    x = 2,434,760,873.80/56,640.39
  6. Step 6: Final answer
    x = 42,986.30

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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.