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Finding the Fourth Proportional to 92,757.78, 128,005.79 and 52,470.69

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Solution

The fourth proportional to 92,757.78, 128,005.79 and 52,470.69 is: 72,409.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,757.78 : 128,005.79 = 52,470.69 : x
  2. Step 2: Convert to fraction form
    92,757.78/128,005.79 = 52,470.69/x
  3. Step 3: Cross multiply
    92,757.78x = 128,005.79 × 52,470.69
  4. Step 4: Simplify right side
    92,757.78x = 6,716,552,462.97
  5. Step 5: Solve for x
    x = 6,716,552,462.97/92,757.78
  6. Step 6: Final answer
    x = 72,409.58

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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.