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Finding the Fourth Proportional to 103,970.01, 155,955.03 and 40,819.92

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Solution

The fourth proportional to 103,970.01, 155,955.03 and 40,819.92 is: 61,229.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,970.01 : 155,955.03 = 40,819.92 : x
  2. Step 2: Convert to fraction form
    103,970.01/155,955.03 = 40,819.92/x
  3. Step 3: Cross multiply
    103,970.01x = 155,955.03 × 40,819.92
  4. Step 4: Simplify right side
    103,970.01x = 6,366,071,848.20
  5. Step 5: Solve for x
    x = 6,366,071,848.20/103,970.01
  6. Step 6: Final answer
    x = 61,229.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.