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Finding the Fourth Proportional to 72,053.30, 108,015.15 and 47,105.30

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Solution

The fourth proportional to 72,053.30, 108,015.15 and 47,105.30 is: 70,615.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,053.30 : 108,015.15 = 47,105.30 : x
  2. Step 2: Convert to fraction form
    72,053.30/108,015.15 = 47,105.30/x
  3. Step 3: Cross multiply
    72,053.30x = 108,015.15 × 47,105.30
  4. Step 4: Simplify right side
    72,053.30x = 5,088,086,045.30
  5. Step 5: Solve for x
    x = 5,088,086,045.30/72,053.30
  6. Step 6: Final answer
    x = 70,615.59

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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.