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Finding the Fourth Proportional to 54,358.86, 74,980.71 and 39,273.69

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Solution

The fourth proportional to 54,358.86, 74,980.71 and 39,273.69 is: 54,172.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,358.86 : 74,980.71 = 39,273.69 : x
  2. Step 2: Convert to fraction form
    54,358.86/74,980.71 = 39,273.69/x
  3. Step 3: Cross multiply
    54,358.86x = 74,980.71 × 39,273.69
  4. Step 4: Simplify right side
    54,358.86x = 2,944,769,160.52
  5. Step 5: Solve for x
    x = 2,944,769,160.52/54,358.86
  6. Step 6: Final answer
    x = 54,172.75

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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.