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Finding the Fourth Proportional to 73,789, 101,828.82 and 43,981

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Solution

The fourth proportional to 73,789, 101,828.82 and 43,981 is: 60,693.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,789 : 101,828.82 = 43,981 : x
  2. Step 2: Convert to fraction form
    73,789/101,828.82 = 43,981/x
  3. Step 3: Cross multiply
    73,789x = 101,828.82 × 43,981
  4. Step 4: Simplify right side
    73,789x = 4,478,533,332.42
  5. Step 5: Solve for x
    x = 4,478,533,332.42/73,789
  6. Step 6: Final answer
    x = 60,693.78

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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.