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Finding the Fourth Proportional to 47,892.30, 71,838.45 and 18,708.30

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Solution

The fourth proportional to 47,892.30, 71,838.45 and 18,708.30 is: 28,062.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,892.30 : 71,838.45 = 18,708.30 : x
  2. Step 2: Convert to fraction form
    47,892.30/71,838.45 = 18,708.30/x
  3. Step 3: Cross multiply
    47,892.30x = 71,838.45 × 18,708.30
  4. Step 4: Simplify right side
    47,892.30x = 1,343,975,274.14
  5. Step 5: Solve for x
    x = 1,343,975,274.14/47,892.30
  6. Step 6: Final answer
    x = 28,062.45

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1.5x scale

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.