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Finding the Fourth Proportional to 72,339.62, 108,509.42 and 30,196.70

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Solution

The fourth proportional to 72,339.62, 108,509.42 and 30,196.70 is: 45,295.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,339.62 : 108,509.42 = 30,196.70 : x
  2. Step 2: Convert to fraction form
    72,339.62/108,509.42 = 30,196.70/x
  3. Step 3: Cross multiply
    72,339.62x = 108,509.42 × 30,196.70
  4. Step 4: Simplify right side
    72,339.62x = 3,276,626,342.77
  5. Step 5: Solve for x
    x = 3,276,626,342.77/72,339.62
  6. Step 6: Final answer
    x = 45,295.05

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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.