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Finding the Fourth Proportional to 70,549.70, 97,359.75 and 38,721.56

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Solution

The fourth proportional to 70,549.70, 97,359.75 and 38,721.56 is: 53,436.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,549.70 : 97,359.75 = 38,721.56 : x
  2. Step 2: Convert to fraction form
    70,549.70/97,359.75 = 38,721.56/x
  3. Step 3: Cross multiply
    70,549.70x = 97,359.75 × 38,721.56
  4. Step 4: Simplify right side
    70,549.70x = 3,769,920,914.41
  5. Step 5: Solve for x
    x = 3,769,920,914.41/70,549.70
  6. Step 6: Final answer
    x = 53,436.39

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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.