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Finding the Fourth Proportional to 91,888.15, 126,808.71 and 51,609.01

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Solution

The fourth proportional to 91,888.15, 126,808.71 and 51,609.01 is: 71,222.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,888.15 : 126,808.71 = 51,609.01 : x
  2. Step 2: Convert to fraction form
    91,888.15/126,808.71 = 51,609.01/x
  3. Step 3: Cross multiply
    91,888.15x = 126,808.71 × 51,609.01
  4. Step 4: Simplify right side
    91,888.15x = 6,544,471,982.48
  5. Step 5: Solve for x
    x = 6,544,471,982.48/91,888.15
  6. Step 6: Final answer
    x = 71,222.15

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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.