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Finding the Fourth Proportional to 77,749.54, 107,294.81 and 43,758.70

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Solution

The fourth proportional to 77,749.54, 107,294.81 and 43,758.70 is: 60,387.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,749.54 : 107,294.81 = 43,758.70 : x
  2. Step 2: Convert to fraction form
    77,749.54/107,294.81 = 43,758.70/x
  3. Step 3: Cross multiply
    77,749.54x = 107,294.81 × 43,758.70
  4. Step 4: Simplify right side
    77,749.54x = 4,695,081,402.35
  5. Step 5: Solve for x
    x = 4,695,081,402.35/77,749.54
  6. Step 6: Final answer
    x = 60,387.26

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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.