Home / 90,071.52-135,107.28-34,680.48

Finding the Fourth Proportional to 90,071.52, 135,107.28 and 34,680.48

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Solution

The fourth proportional to 90,071.52, 135,107.28 and 34,680.48 is: 52,020.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,071.52 : 135,107.28 = 34,680.48 : x
  2. Step 2: Convert to fraction form
    90,071.52/135,107.28 = 34,680.48/x
  3. Step 3: Cross multiply
    90,071.52x = 135,107.28 × 34,680.48
  4. Step 4: Simplify right side
    90,071.52x = 4,685,585,321.89
  5. Step 5: Solve for x
    x = 4,685,585,321.89/90,071.52
  6. Step 6: Final answer
    x = 52,020.72

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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.