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Finding the Fourth Proportional to 91,888.65, 126,809.40 and 51,609.51

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Solution

The fourth proportional to 91,888.65, 126,809.40 and 51,609.51 is: 71,222.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,888.65 : 126,809.40 = 51,609.51 : x
  2. Step 2: Convert to fraction form
    91,888.65/126,809.40 = 51,609.51/x
  3. Step 3: Cross multiply
    91,888.65x = 126,809.40 × 51,609.51
  4. Step 4: Simplify right side
    91,888.65x = 6,544,570,997.39
  5. Step 5: Solve for x
    x = 6,544,570,997.39/91,888.65
  6. Step 6: Final answer
    x = 71,222.84

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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.