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Finding the Fourth Proportional to 65,191.40, 97,790.30 and 34,087.40

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Solution

The fourth proportional to 65,191.40, 97,790.30 and 34,087.40 is: 51,132.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,191.40 : 97,790.30 = 34,087.40 : x
  2. Step 2: Convert to fraction form
    65,191.40/97,790.30 = 34,087.40/x
  3. Step 3: Cross multiply
    65,191.40x = 97,790.30 × 34,087.40
  4. Step 4: Simplify right side
    65,191.40x = 3,333,417,072.22
  5. Step 5: Solve for x
    x = 3,333,417,072.22/65,191.40
  6. Step 6: Final answer
    x = 51,132.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.