Home / 91,005.20-125,585.28-50,718.80

Finding the Fourth Proportional to 91,005.20, 125,585.28 and 50,718.80

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Solution

The fourth proportional to 91,005.20, 125,585.28 and 50,718.80 is: 69,990.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,005.20 : 125,585.28 = 50,718.80 : x
  2. Step 2: Convert to fraction form
    91,005.20/125,585.28 = 50,718.80/x
  3. Step 3: Cross multiply
    91,005.20x = 125,585.28 × 50,718.80
  4. Step 4: Simplify right side
    91,005.20x = 6,369,534,699.26
  5. Step 5: Solve for x
    x = 6,369,534,699.26/91,005.20
  6. Step 6: Final answer
    x = 69,990.89

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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.