Home / 90,885.50-136,340.67-31,712.48

Finding the Fourth Proportional to 90,885.50, 136,340.67 and 31,712.48

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Solution

The fourth proportional to 90,885.50, 136,340.67 and 31,712.48 is: 47,573.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,885.50 : 136,340.67 = 31,712.48 : x
  2. Step 2: Convert to fraction form
    90,885.50/136,340.67 = 31,712.48/x
  3. Step 3: Cross multiply
    90,885.50x = 136,340.67 × 31,712.48
  4. Step 4: Simplify right side
    90,885.50x = 4,323,700,770.56
  5. Step 5: Solve for x
    x = 4,323,700,770.56/90,885.50
  6. Step 6: Final answer
    x = 47,573.05

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1.5x scale

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.