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Finding the Fourth Proportional to 57,470.86, 79,264.79 and 39,332.32

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Solution

The fourth proportional to 57,470.86, 79,264.79 and 39,332.32 is: 54,247.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,470.86 : 79,264.79 = 39,332.32 : x
  2. Step 2: Convert to fraction form
    57,470.86/79,264.79 = 39,332.32/x
  3. Step 3: Cross multiply
    57,470.86x = 79,264.79 × 39,332.32
  4. Step 4: Simplify right side
    57,470.86x = 3,117,668,085.01
  5. Step 5: Solve for x
    x = 3,117,668,085.01/57,470.86
  6. Step 6: Final answer
    x = 54,247.81

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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.