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Finding the Fourth Proportional to 30,480.51, 42,061.13 and 17,049.47

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Solution

The fourth proportional to 30,480.51, 42,061.13 and 17,049.47 is: 23,527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,480.51 : 42,061.13 = 17,049.47 : x
  2. Step 2: Convert to fraction form
    30,480.51/42,061.13 = 17,049.47/x
  3. Step 3: Cross multiply
    30,480.51x = 42,061.13 × 17,049.47
  4. Step 4: Simplify right side
    30,480.51x = 717,119,678.55
  5. Step 5: Solve for x
    x = 717,119,678.55/30,480.51
  6. Step 6: Final answer
    x = 23,527.15

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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.