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Finding the Fourth Proportional to 77,332.78, 106,727.79 and 43,346.80

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Solution

The fourth proportional to 77,332.78, 106,727.79 and 43,346.80 is: 59,823.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,332.78 : 106,727.79 = 43,346.80 : x
  2. Step 2: Convert to fraction form
    77,332.78/106,727.79 = 43,346.80/x
  3. Step 3: Cross multiply
    77,332.78x = 106,727.79 × 43,346.80
  4. Step 4: Simplify right side
    77,332.78x = 4,626,308,167.57
  5. Step 5: Solve for x
    x = 4,626,308,167.57/77,332.78
  6. Step 6: Final answer
    x = 59,823.38

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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.