Home / 72,424.08-108,636.12-30,281.13

Finding the Fourth Proportional to 72,424.08, 108,636.12 and 30,281.13

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Solution

The fourth proportional to 72,424.08, 108,636.12 and 30,281.13 is: 45,421.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,424.08 : 108,636.12 = 30,281.13 : x
  2. Step 2: Convert to fraction form
    72,424.08/108,636.12 = 30,281.13/x
  3. Step 3: Cross multiply
    72,424.08x = 108,636.12 × 30,281.13
  4. Step 4: Simplify right side
    72,424.08x = 3,289,624,472.42
  5. Step 5: Solve for x
    x = 3,289,624,472.42/72,424.08
  6. Step 6: Final answer
    x = 45,421.70

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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.