Home / 90,938.34-136,426.41-38,348.28

Finding the Fourth Proportional to 90,938.34, 136,426.41 and 38,348.28

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Solution

The fourth proportional to 90,938.34, 136,426.41 and 38,348.28 is: 57,530.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,938.34 : 136,426.41 = 38,348.28 : x
  2. Step 2: Convert to fraction form
    90,938.34/136,426.41 = 38,348.28/x
  3. Step 3: Cross multiply
    90,938.34x = 136,426.41 × 38,348.28
  4. Step 4: Simplify right side
    90,938.34x = 5,231,718,170.07
  5. Step 5: Solve for x
    x = 5,231,718,170.07/90,938.34
  6. Step 6: Final answer
    x = 57,530.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.