Home / 90,790.47-136,189.35-31,632.12

Finding the Fourth Proportional to 90,790.47, 136,189.35 and 31,632.12

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Solution

The fourth proportional to 90,790.47, 136,189.35 and 31,632.12 is: 47,449.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,790.47 : 136,189.35 = 31,632.12 : x
  2. Step 2: Convert to fraction form
    90,790.47/136,189.35 = 31,632.12/x
  3. Step 3: Cross multiply
    90,790.47x = 136,189.35 × 31,632.12
  4. Step 4: Simplify right side
    90,790.47x = 4,307,957,861.92
  5. Step 5: Solve for x
    x = 4,307,957,861.92/90,790.47
  6. Step 6: Final answer
    x = 47,449.45

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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.