Home / 90,788.72-136,186.74-31,630.38

Finding the Fourth Proportional to 90,788.72, 136,186.74 and 31,630.38

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Solution

The fourth proportional to 90,788.72, 136,186.74 and 31,630.38 is: 47,446.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,788.72 : 136,186.74 = 31,630.38 : x
  2. Step 2: Convert to fraction form
    90,788.72/136,186.74 = 31,630.38/x
  3. Step 3: Cross multiply
    90,788.72x = 136,186.74 × 31,630.38
  4. Step 4: Simplify right side
    90,788.72x = 4,307,638,337.16
  5. Step 5: Solve for x
    x = 4,307,638,337.16/90,788.72
  6. Step 6: Final answer
    x = 47,446.85

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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.