Home / 90,691.65-125,158.71-50,406.08

Finding the Fourth Proportional to 90,691.65, 125,158.71 and 50,406.08

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Solution

The fourth proportional to 90,691.65, 125,158.71 and 50,406.08 is: 69,562.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,691.65 : 125,158.71 = 50,406.08 : x
  2. Step 2: Convert to fraction form
    90,691.65/125,158.71 = 50,406.08/x
  3. Step 3: Cross multiply
    90,691.65x = 125,158.71 × 50,406.08
  4. Step 4: Simplify right side
    90,691.65x = 6,308,759,323.16
  5. Step 5: Solve for x
    x = 6,308,759,323.16/90,691.65
  6. Step 6: Final answer
    x = 69,562.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.