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Finding the Fourth Proportional to 70,805.94, 97,711.41 and 38,974.17

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Solution

The fourth proportional to 70,805.94, 97,711.41 and 38,974.17 is: 53,783.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,805.94 : 97,711.41 = 38,974.17 : x
  2. Step 2: Convert to fraction form
    70,805.94/97,711.41 = 38,974.17/x
  3. Step 3: Cross multiply
    70,805.94x = 97,711.41 × 38,974.17
  4. Step 4: Simplify right side
    70,805.94x = 3,808,221,104.28
  5. Step 5: Solve for x
    x = 3,808,221,104.28/70,805.94
  6. Step 6: Final answer
    x = 53,783.92

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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.