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Finding the Fourth Proportional to 30,459.27, 42,031.85 and 17,031.63

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Solution

The fourth proportional to 30,459.27, 42,031.85 and 17,031.63 is: 23,502.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,459.27 : 42,031.85 = 17,031.63 : x
  2. Step 2: Convert to fraction form
    30,459.27/42,031.85 = 17,031.63/x
  3. Step 3: Cross multiply
    30,459.27x = 42,031.85 × 17,031.63
  4. Step 4: Simplify right side
    30,459.27x = 715,870,832.26
  5. Step 5: Solve for x
    x = 715,870,832.26/30,459.27
  6. Step 6: Final answer
    x = 23,502.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.