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Finding the Fourth Proportional to 77,708.67, 107,237.79 and 43,717.17

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Solution

The fourth proportional to 77,708.67, 107,237.79 and 43,717.17 is: 60,329.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,708.67 : 107,237.79 = 43,717.17 : x
  2. Step 2: Convert to fraction form
    77,708.67/107,237.79 = 43,717.17/x
  3. Step 3: Cross multiply
    77,708.67x = 107,237.79 × 43,717.17
  4. Step 4: Simplify right side
    77,708.67x = 4,688,132,695.85
  5. Step 5: Solve for x
    x = 4,688,132,695.85/77,708.67
  6. Step 6: Final answer
    x = 60,329.60

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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.