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Finding the Fourth Proportional to 70,645.72, 97,492.90 and 38,815.44

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Solution

The fourth proportional to 70,645.72, 97,492.90 and 38,815.44 is: 53,566.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,645.72 : 97,492.90 = 38,815.44 : x
  2. Step 2: Convert to fraction form
    70,645.72/97,492.90 = 38,815.44/x
  3. Step 3: Cross multiply
    70,645.72x = 97,492.90 × 38,815.44
  4. Step 4: Simplify right side
    70,645.72x = 3,784,229,810.38
  5. Step 5: Solve for x
    x = 3,784,229,810.38/70,645.72
  6. Step 6: Final answer
    x = 53,566.30

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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.