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Finding the Fourth Proportional to 70,848.86, 106,287.30 and 20,248.34

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Solution

The fourth proportional to 70,848.86, 106,287.30 and 20,248.34 is: 30,376.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,848.86 : 106,287.30 = 20,248.34 : x
  2. Step 2: Convert to fraction form
    70,848.86/106,287.30 = 20,248.34/x
  3. Step 3: Cross multiply
    70,848.86x = 106,287.30 × 20,248.34
  4. Step 4: Simplify right side
    70,848.86x = 2,152,140,856.65
  5. Step 5: Solve for x
    x = 2,152,140,856.65/70,848.86
  6. Step 6: Final answer
    x = 30,376.51

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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.