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Finding the Fourth Proportional to 79,589.40, 109,848.98 and 45,620.66

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Solution

The fourth proportional to 79,589.40, 109,848.98 and 45,620.66 is: 62,965.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,589.40 : 109,848.98 = 45,620.66 : x
  2. Step 2: Convert to fraction form
    79,589.40/109,848.98 = 45,620.66/x
  3. Step 3: Cross multiply
    79,589.40x = 109,848.98 × 45,620.66
  4. Step 4: Simplify right side
    79,589.40x = 5,011,382,967.93
  5. Step 5: Solve for x
    x = 5,011,382,967.93/79,589.40
  6. Step 6: Final answer
    x = 62,965.46

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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.