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Finding the Fourth Proportional to 91,108.95, 125,741.31 and 53,383.20

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Solution

The fourth proportional to 91,108.95, 125,741.31 and 53,383.20 is: 73,675.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,108.95 : 125,741.31 = 53,383.20 : x
  2. Step 2: Convert to fraction form
    91,108.95/125,741.31 = 53,383.20/x
  3. Step 3: Cross multiply
    91,108.95x = 125,741.31 × 53,383.20
  4. Step 4: Simplify right side
    91,108.95x = 6,712,473,499.99
  5. Step 5: Solve for x
    x = 6,712,473,499.99/91,108.95
  6. Step 6: Final answer
    x = 73,675.24

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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.