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Finding the Fourth Proportional to 70,711.65, 97,579.55 and 38,880.27

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Solution

The fourth proportional to 70,711.65, 97,579.55 and 38,880.27 is: 53,653.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,711.65 : 97,579.55 = 38,880.27 : x
  2. Step 2: Convert to fraction form
    70,711.65/97,579.55 = 38,880.27/x
  3. Step 3: Cross multiply
    70,711.65x = 97,579.55 × 38,880.27
  4. Step 4: Simplify right side
    70,711.65x = 3,793,919,347.68
  5. Step 5: Solve for x
    x = 3,793,919,347.68/70,711.65
  6. Step 6: Final answer
    x = 53,653.38

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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.