Home / 38,649.18-53,377.98-31,120.44

Finding the Fourth Proportional to 38,649.18, 53,377.98 and 31,120.44

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Solution

The fourth proportional to 38,649.18, 53,377.98 and 31,120.44 is: 42,980.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,649.18 : 53,377.98 = 31,120.44 : x
  2. Step 2: Convert to fraction form
    38,649.18/53,377.98 = 31,120.44/x
  3. Step 3: Cross multiply
    38,649.18x = 53,377.98 × 31,120.44
  4. Step 4: Simplify right side
    38,649.18x = 1,661,146,223.91
  5. Step 5: Solve for x
    x = 1,661,146,223.91/38,649.18
  6. Step 6: Final answer
    x = 42,980.12

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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.