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Finding the Fourth Proportional to 72,438.68, 100,023.18 and 48,585.80

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Solution

The fourth proportional to 72,438.68, 100,023.18 and 48,585.80 is: 67,087.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,438.68 : 100,023.18 = 48,585.80 : x
  2. Step 2: Convert to fraction form
    72,438.68/100,023.18 = 48,585.80/x
  3. Step 3: Cross multiply
    72,438.68x = 100,023.18 × 48,585.80
  4. Step 4: Simplify right side
    72,438.68x = 4,859,706,218.84
  5. Step 5: Solve for x
    x = 4,859,706,218.84/72,438.68
  6. Step 6: Final answer
    x = 67,087.17

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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.