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Finding the Fourth Proportional to 79,259.28, 109,359.84 and 53,769.12

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Solution

The fourth proportional to 79,259.28, 109,359.84 and 53,769.12 is: 74,189.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,259.28 : 109,359.84 = 53,769.12 : x
  2. Step 2: Convert to fraction form
    79,259.28/109,359.84 = 53,769.12/x
  3. Step 3: Cross multiply
    79,259.28x = 109,359.84 × 53,769.12
  4. Step 4: Simplify right side
    79,259.28x = 5,880,182,360.14
  5. Step 5: Solve for x
    x = 5,880,182,360.14/79,259.28
  6. Step 6: Final answer
    x = 74,189.20

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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.