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Finding the Fourth Proportional to 72,042.30, 107,998.65 and 47,094.30

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Solution

The fourth proportional to 72,042.30, 107,998.65 and 47,094.30 is: 70,599.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,042.30 : 107,998.65 = 47,094.30 : x
  2. Step 2: Convert to fraction form
    72,042.30/107,998.65 = 47,094.30/x
  3. Step 3: Cross multiply
    72,042.30x = 107,998.65 × 47,094.30
  4. Step 4: Simplify right side
    72,042.30x = 5,086,120,822.70
  5. Step 5: Solve for x
    x = 5,086,120,822.70/72,042.30
  6. Step 6: Final answer
    x = 70,599.09

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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.