Home / 90,877.12-136,333.02-31,729.72

Finding the Fourth Proportional to 90,877.12, 136,333.02 and 31,729.72

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Solution

The fourth proportional to 90,877.12, 136,333.02 and 31,729.72 is: 47,600.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,877.12 : 136,333.02 = 31,729.72 : x
  2. Step 2: Convert to fraction form
    90,877.12/136,333.02 = 31,729.72/x
  3. Step 3: Cross multiply
    90,877.12x = 136,333.02 × 31,729.72
  4. Step 4: Simplify right side
    90,877.12x = 4,325,808,551.35
  5. Step 5: Solve for x
    x = 4,325,808,551.35/90,877.12
  6. Step 6: Final answer
    x = 47,600.63

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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.