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Finding the Fourth Proportional to 70,618.23, 97,453.80 and 38,787.84

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Solution

The fourth proportional to 70,618.23, 97,453.80 and 38,787.84 is: 53,527.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,618.23 : 97,453.80 = 38,787.84 : x
  2. Step 2: Convert to fraction form
    70,618.23/97,453.80 = 38,787.84/x
  3. Step 3: Cross multiply
    70,618.23x = 97,453.80 × 38,787.84
  4. Step 4: Simplify right side
    70,618.23x = 3,780,022,401.79
  5. Step 5: Solve for x
    x = 3,780,022,401.79/70,618.23
  6. Step 6: Final answer
    x = 53,527.57

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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.