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Finding the Fourth Proportional to 70,422.59, 97,185.53 and 38,591.21

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Solution

The fourth proportional to 70,422.59, 97,185.53 and 38,591.21 is: 53,257.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,422.59 : 97,185.53 = 38,591.21 : x
  2. Step 2: Convert to fraction form
    70,422.59/97,185.53 = 38,591.21/x
  3. Step 3: Cross multiply
    70,422.59x = 97,185.53 × 38,591.21
  4. Step 4: Simplify right side
    70,422.59x = 3,750,507,197.19
  5. Step 5: Solve for x
    x = 3,750,507,197.19/70,422.59
  6. Step 6: Final answer
    x = 53,257.16

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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.