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Finding the Fourth Proportional to 71,342.20, 107,013.30 and 47,841.40

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Solution

The fourth proportional to 71,342.20, 107,013.30 and 47,841.40 is: 71,762.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,342.20 : 107,013.30 = 47,841.40 : x
  2. Step 2: Convert to fraction form
    71,342.20/107,013.30 = 47,841.40/x
  3. Step 3: Cross multiply
    71,342.20x = 107,013.30 × 47,841.40
  4. Step 4: Simplify right side
    71,342.20x = 5,119,666,090.62
  5. Step 5: Solve for x
    x = 5,119,666,090.62/71,342.20
  6. Step 6: Final answer
    x = 71,762.10

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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.