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Finding the Fourth Proportional to 30,478.55, 42,062.03 and 17,049.00

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Solution

The fourth proportional to 30,478.55, 42,062.03 and 17,049.00 is: 23,528.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,478.55 : 42,062.03 = 17,049.00 : x
  2. Step 2: Convert to fraction form
    30,478.55/42,062.03 = 17,049.00/x
  3. Step 3: Cross multiply
    30,478.55x = 42,062.03 × 17,049.00
  4. Step 4: Simplify right side
    30,478.55x = 717,115,580.74
  5. Step 5: Solve for x
    x = 717,115,580.74/30,478.55
  6. Step 6: Final answer
    x = 23,528.54

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1.5x scale

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.