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Finding the Fourth Proportional to 70,223.68, 96,909 and 38,392.58

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Solution

The fourth proportional to 70,223.68, 96,909 and 38,392.58 is: 52,981.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,223.68 : 96,909 = 38,392.58 : x
  2. Step 2: Convert to fraction form
    70,223.68/96,909 = 38,392.58/x
  3. Step 3: Cross multiply
    70,223.68x = 96,909 × 38,392.58
  4. Step 4: Simplify right side
    70,223.68x = 3,720,586,535.22
  5. Step 5: Solve for x
    x = 3,720,586,535.22/70,223.68
  6. Step 6: Final answer
    x = 52,981.94

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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.