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Finding the Fourth Proportional to 72,670.97, 100,223.49 and 47,152.19

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Solution

The fourth proportional to 72,670.97, 100,223.49 and 47,152.19 is: 65,029.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,670.97 : 100,223.49 = 47,152.19 : x
  2. Step 2: Convert to fraction form
    72,670.97/100,223.49 = 47,152.19/x
  3. Step 3: Cross multiply
    72,670.97x = 100,223.49 × 47,152.19
  4. Step 4: Simplify right side
    72,670.97x = 4,725,757,470.32
  5. Step 5: Solve for x
    x = 4,725,757,470.32/72,670.97
  6. Step 6: Final answer
    x = 65,029.51

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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.