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Finding the Fourth Proportional to 79,710, 109,999.80 and 44,382

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Solution

The fourth proportional to 79,710, 109,999.80 and 44,382 is: 61,247.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,710 : 109,999.80 = 44,382 : x
  2. Step 2: Convert to fraction form
    79,710/109,999.80 = 44,382/x
  3. Step 3: Cross multiply
    79,710x = 109,999.80 × 44,382
  4. Step 4: Simplify right side
    79,710x = 4,882,011,123.60
  5. Step 5: Solve for x
    x = 4,882,011,123.60/79,710
  6. Step 6: Final answer
    x = 61,247.16

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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.