Home / 90,840.68-136,211.60-31,660.46

Finding the Fourth Proportional to 90,840.68, 136,211.60 and 31,660.46

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Solution

The fourth proportional to 90,840.68, 136,211.60 and 31,660.46 is: 47,473.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,840.68 : 136,211.60 = 31,660.46 : x
  2. Step 2: Convert to fraction form
    90,840.68/136,211.60 = 31,660.46/x
  3. Step 3: Cross multiply
    90,840.68x = 136,211.60 × 31,660.46
  4. Step 4: Simplify right side
    90,840.68x = 4,312,521,913.34
  5. Step 5: Solve for x
    x = 4,312,521,913.34/90,840.68
  6. Step 6: Final answer
    x = 47,473.47

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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.