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Finding the Fourth Proportional to 70,419.59, 97,181.39 and 38,588.21

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Solution

The fourth proportional to 70,419.59, 97,181.39 and 38,588.21 is: 53,253.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,419.59 : 97,181.39 = 38,588.21 : x
  2. Step 2: Convert to fraction form
    70,419.59/97,181.39 = 38,588.21/x
  3. Step 3: Cross multiply
    70,419.59x = 97,181.39 × 38,588.21
  4. Step 4: Simplify right side
    70,419.59x = 3,750,055,495.98
  5. Step 5: Solve for x
    x = 3,750,055,495.98/70,419.59
  6. Step 6: Final answer
    x = 53,253.02

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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.