Home / 90,499.68-135,717.12-31,319.46

Finding the Fourth Proportional to 90,499.68, 135,717.12 and 31,319.46

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Solution

The fourth proportional to 90,499.68, 135,717.12 and 31,319.46 is: 46,967.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,499.68 : 135,717.12 = 31,319.46 : x
  2. Step 2: Convert to fraction form
    90,499.68/135,717.12 = 31,319.46/x
  3. Step 3: Cross multiply
    90,499.68x = 135,717.12 × 31,319.46
  4. Step 4: Simplify right side
    90,499.68x = 4,250,586,911.16
  5. Step 5: Solve for x
    x = 4,250,586,911.16/90,499.68
  6. Step 6: Final answer
    x = 46,967.98

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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.