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Finding the Fourth Proportional to 77,612.61, 107,114.28 and 43,160.78

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Solution

The fourth proportional to 77,612.61, 107,114.28 and 43,160.78 is: 59,566.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,612.61 : 107,114.28 = 43,160.78 : x
  2. Step 2: Convert to fraction form
    77,612.61/107,114.28 = 43,160.78/x
  3. Step 3: Cross multiply
    77,612.61x = 107,114.28 × 43,160.78
  4. Step 4: Simplify right side
    77,612.61x = 4,623,135,338.37
  5. Step 5: Solve for x
    x = 4,623,135,338.37/77,612.61
  6. Step 6: Final answer
    x = 59,566.81

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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.