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Finding the Fourth Proportional to 90,858.80, 125,527.35 and 69,423.57

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Solution

The fourth proportional to 90,858.80, 125,527.35 and 69,423.57 is: 95,913.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,858.80 : 125,527.35 = 69,423.57 : x
  2. Step 2: Convert to fraction form
    90,858.80/125,527.35 = 69,423.57/x
  3. Step 3: Cross multiply
    90,858.80x = 125,527.35 × 69,423.57
  4. Step 4: Simplify right side
    90,858.80x = 8,714,556,769.64
  5. Step 5: Solve for x
    x = 8,714,556,769.64/90,858.80
  6. Step 6: Final answer
    x = 95,913.19

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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.