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Finding the Fourth Proportional to 70,679.64, 97,538.67 and 38,414.28

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Solution

The fourth proportional to 70,679.64, 97,538.67 and 38,414.28 is: 53,012.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,679.64 : 97,538.67 = 38,414.28 : x
  2. Step 2: Convert to fraction form
    70,679.64/97,538.67 = 38,414.28/x
  3. Step 3: Cross multiply
    70,679.64x = 97,538.67 × 38,414.28
  4. Step 4: Simplify right side
    70,679.64x = 3,746,877,780.21
  5. Step 5: Solve for x
    x = 3,746,877,780.21/70,679.64
  6. Step 6: Final answer
    x = 53,012.12

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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.