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Finding the Fourth Proportional to 86,988, 120,043.44 and 47,244

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Solution

The fourth proportional to 86,988, 120,043.44 and 47,244 is: 65,196.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,988 : 120,043.44 = 47,244 : x
  2. Step 2: Convert to fraction form
    86,988/120,043.44 = 47,244/x
  3. Step 3: Cross multiply
    86,988x = 120,043.44 × 47,244
  4. Step 4: Simplify right side
    86,988x = 5,671,332,279.36
  5. Step 5: Solve for x
    x = 5,671,332,279.36/86,988
  6. Step 6: Final answer
    x = 65,196.72

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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.