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Finding the Fourth Proportional to 91,064.72, 125,681.64 and 53,354

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Solution

The fourth proportional to 91,064.72, 125,681.64 and 53,354 is: 73,635.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,064.72 : 125,681.64 = 53,354 : x
  2. Step 2: Convert to fraction form
    91,064.72/125,681.64 = 53,354/x
  3. Step 3: Cross multiply
    91,064.72x = 125,681.64 × 53,354
  4. Step 4: Simplify right side
    91,064.72x = 6,705,618,220.56
  5. Step 5: Solve for x
    x = 6,705,618,220.56/91,064.72
  6. Step 6: Final answer
    x = 73,635.74

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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.