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Finding the Fourth Proportional to 91,464.34, 126,069.81 and 61,238.98

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Solution

The fourth proportional to 91,464.34, 126,069.81 and 61,238.98 is: 84,408.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,464.34 : 126,069.81 = 61,238.98 : x
  2. Step 2: Convert to fraction form
    91,464.34/126,069.81 = 61,238.98/x
  3. Step 3: Cross multiply
    91,464.34x = 126,069.81 × 61,238.98
  4. Step 4: Simplify right side
    91,464.34x = 7,720,386,573.19
  5. Step 5: Solve for x
    x = 7,720,386,573.19/91,464.34
  6. Step 6: Final answer
    x = 84,408.71

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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.