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Finding the Fourth Proportional to 91,885.34, 126,812.21 and 53,654.42

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Solution

The fourth proportional to 91,885.34, 126,812.21 and 53,654.42 is: 74,049.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,885.34 : 126,812.21 = 53,654.42 : x
  2. Step 2: Convert to fraction form
    91,885.34/126,812.21 = 53,654.42/x
  3. Step 3: Cross multiply
    91,885.34x = 126,812.21 × 53,654.42
  4. Step 4: Simplify right side
    91,885.34x = 6,804,035,576.47
  5. Step 5: Solve for x
    x = 6,804,035,576.47/91,885.34
  6. Step 6: Final answer
    x = 74,049.20

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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.