Home / 38,475.12-53,120.16-31,418.40

Finding the Fourth Proportional to 38,475.12, 53,120.16 and 31,418.40

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Solution

The fourth proportional to 38,475.12, 53,120.16 and 31,418.40 is: 43,377.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,475.12 : 53,120.16 = 31,418.40 : x
  2. Step 2: Convert to fraction form
    38,475.12/53,120.16 = 31,418.40/x
  3. Step 3: Cross multiply
    38,475.12x = 53,120.16 × 31,418.40
  4. Step 4: Simplify right side
    38,475.12x = 1,668,950,434.94
  5. Step 5: Solve for x
    x = 1,668,950,434.94/38,475.12
  6. Step 6: Final answer
    x = 43,377.39

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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.