Home / 90,658.82-136,013.74-31,500.47

Finding the Fourth Proportional to 90,658.82, 136,013.74 and 31,500.47

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Solution

The fourth proportional to 90,658.82, 136,013.74 and 31,500.47 is: 47,259.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,658.82 : 136,013.74 = 31,500.47 : x
  2. Step 2: Convert to fraction form
    90,658.82/136,013.74 = 31,500.47/x
  3. Step 3: Cross multiply
    90,658.82x = 136,013.74 × 31,500.47
  4. Step 4: Simplify right side
    90,658.82x = 4,284,495,977.64
  5. Step 5: Solve for x
    x = 4,284,495,977.64/90,658.82
  6. Step 6: Final answer
    x = 47,259.56

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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.