Home / 90,803.13-125,310-50,520.66

Finding the Fourth Proportional to 90,803.13, 125,310 and 50,520.66

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Solution

The fourth proportional to 90,803.13, 125,310 and 50,520.66 is: 69,719.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,803.13 : 125,310 = 50,520.66 : x
  2. Step 2: Convert to fraction form
    90,803.13/125,310 = 50,520.66/x
  3. Step 3: Cross multiply
    90,803.13x = 125,310 × 50,520.66
  4. Step 4: Simplify right side
    90,803.13x = 6,330,743,904.60
  5. Step 5: Solve for x
    x = 6,330,743,904.60/90,803.13
  6. Step 6: Final answer
    x = 69,719.45

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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.