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Finding the Fourth Proportional to 69,071.80, 103,581.66 and 22,312.12

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Solution

The fourth proportional to 69,071.80, 103,581.66 and 22,312.12 is: 33,459.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,071.80 : 103,581.66 = 22,312.12 : x
  2. Step 2: Convert to fraction form
    69,071.80/103,581.66 = 22,312.12/x
  3. Step 3: Cross multiply
    69,071.80x = 103,581.66 × 22,312.12
  4. Step 4: Simplify right side
    69,071.80x = 2,311,126,427.72
  5. Step 5: Solve for x
    x = 2,311,126,427.72/69,071.80
  6. Step 6: Final answer
    x = 33,459.77

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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.