Home / 45,789.90-63,147.87-31,424.38

Finding the Fourth Proportional to 45,789.90, 63,147.87 and 31,424.38

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Solution

The fourth proportional to 45,789.90, 63,147.87 and 31,424.38 is: 43,336.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,789.90 : 63,147.87 = 31,424.38 : x
  2. Step 2: Convert to fraction form
    45,789.90/63,147.87 = 31,424.38/x
  3. Step 3: Cross multiply
    45,789.90x = 63,147.87 × 31,424.38
  4. Step 4: Simplify right side
    45,789.90x = 1,984,382,663.07
  5. Step 5: Solve for x
    x = 1,984,382,663.07/45,789.90
  6. Step 6: Final answer
    x = 43,336.69

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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.