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Finding the Fourth Proportional to 72,757.56, 100,319.55 and 49,798.45

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Solution

The fourth proportional to 72,757.56, 100,319.55 and 49,798.45 is: 68,663.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,757.56 : 100,319.55 = 49,798.45 : x
  2. Step 2: Convert to fraction form
    72,757.56/100,319.55 = 49,798.45/x
  3. Step 3: Cross multiply
    72,757.56x = 100,319.55 × 49,798.45
  4. Step 4: Simplify right side
    72,757.56x = 4,995,758,094.70
  5. Step 5: Solve for x
    x = 4,995,758,094.70/72,757.56
  6. Step 6: Final answer
    x = 68,663.08

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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.