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Finding the Fourth Proportional to 91,388.88, 126,064.08 and 53,655.84

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Solution

The fourth proportional to 91,388.88, 126,064.08 and 53,655.84 is: 74,014.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,388.88 : 126,064.08 = 53,655.84 : x
  2. Step 2: Convert to fraction form
    91,388.88/126,064.08 = 53,655.84/x
  3. Step 3: Cross multiply
    91,388.88x = 126,064.08 × 53,655.84
  4. Step 4: Simplify right side
    91,388.88x = 6,764,074,106.23
  5. Step 5: Solve for x
    x = 6,764,074,106.23/91,388.88
  6. Step 6: Final answer
    x = 74,014.19

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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.