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Finding the Fourth Proportional to 57,769.27, 79,898.78 and 51,798.76

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Solution

The fourth proportional to 57,769.27, 79,898.78 and 51,798.76 is: 71,641.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,769.27 : 79,898.78 = 51,798.76 : x
  2. Step 2: Convert to fraction form
    57,769.27/79,898.78 = 51,798.76/x
  3. Step 3: Cross multiply
    57,769.27x = 79,898.78 × 51,798.76
  4. Step 4: Simplify right side
    57,769.27x = 4,138,657,659.26
  5. Step 5: Solve for x
    x = 4,138,657,659.26/57,769.27
  6. Step 6: Final answer
    x = 71,641.17

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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.