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Finding the Fourth Proportional to 72,465.20, 100,051.08 and 45,282.80

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Solution

The fourth proportional to 72,465.20, 100,051.08 and 45,282.80 is: 62,520.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,465.20 : 100,051.08 = 45,282.80 : x
  2. Step 2: Convert to fraction form
    72,465.20/100,051.08 = 45,282.80/x
  3. Step 3: Cross multiply
    72,465.20x = 100,051.08 × 45,282.80
  4. Step 4: Simplify right side
    72,465.20x = 4,530,593,045.42
  5. Step 5: Solve for x
    x = 4,530,593,045.42/72,465.20
  6. Step 6: Final answer
    x = 62,520.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.