Home / 91,023.50-136,530.96-31,872.44

Finding the Fourth Proportional to 91,023.50, 136,530.96 and 31,872.44

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Solution

The fourth proportional to 91,023.50, 136,530.96 and 31,872.44 is: 47,807.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,023.50 : 136,530.96 = 31,872.44 : x
  2. Step 2: Convert to fraction form
    91,023.50/136,530.96 = 31,872.44/x
  3. Step 3: Cross multiply
    91,023.50x = 136,530.96 × 31,872.44
  4. Step 4: Simplify right side
    91,023.50x = 4,351,574,830.74
  5. Step 5: Solve for x
    x = 4,351,574,830.74/91,023.50
  6. Step 6: Final answer
    x = 47,807.16

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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.