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Finding the Fourth Proportional to 72,124.80, 108,187.18 and 30,004.08

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Solution

The fourth proportional to 72,124.80, 108,187.18 and 30,004.08 is: 45,006.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,124.80 : 108,187.18 = 30,004.08 : x
  2. Step 2: Convert to fraction form
    72,124.80/108,187.18 = 30,004.08/x
  3. Step 3: Cross multiply
    72,124.80x = 108,187.18 × 30,004.08
  4. Step 4: Simplify right side
    72,124.80x = 3,246,056,803.69
  5. Step 5: Solve for x
    x = 3,246,056,803.69/72,124.80
  6. Step 6: Final answer
    x = 45,006.11

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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.