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Finding the Fourth Proportional to 101,840.80, 152,699.84 and 45,670.76

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Solution

The fourth proportional to 101,840.80, 152,699.84 and 45,670.76 is: 68,478.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,840.80 : 152,699.84 = 45,670.76 : x
  2. Step 2: Convert to fraction form
    101,840.80/152,699.84 = 45,670.76/x
  3. Step 3: Cross multiply
    101,840.80x = 152,699.84 × 45,670.76
  4. Step 4: Simplify right side
    101,840.80x = 6,973,917,744.68
  5. Step 5: Solve for x
    x = 6,973,917,744.68/101,840.80
  6. Step 6: Final answer
    x = 68,478.62

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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.