Home / 90,955.17-136,447.34-38,372.40

Finding the Fourth Proportional to 90,955.17, 136,447.34 and 38,372.40

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Solution

The fourth proportional to 90,955.17, 136,447.34 and 38,372.40 is: 57,564.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,955.17 : 136,447.34 = 38,372.40 : x
  2. Step 2: Convert to fraction form
    90,955.17/136,447.34 = 38,372.40/x
  3. Step 3: Cross multiply
    90,955.17x = 136,447.34 × 38,372.40
  4. Step 4: Simplify right side
    90,955.17x = 5,235,811,717.55
  5. Step 5: Solve for x
    x = 5,235,811,717.55/90,955.17
  6. Step 6: Final answer
    x = 57,564.75

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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.