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Finding the Fourth Proportional to 99,735.67, 137,621.58 and 57,294.19

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Solution

The fourth proportional to 99,735.67, 137,621.58 and 57,294.19 is: 79,058.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,735.67 : 137,621.58 = 57,294.19 : x
  2. Step 2: Convert to fraction form
    99,735.67/137,621.58 = 57,294.19/x
  3. Step 3: Cross multiply
    99,735.67x = 137,621.58 × 57,294.19
  4. Step 4: Simplify right side
    99,735.67x = 7,884,916,952.62
  5. Step 5: Solve for x
    x = 7,884,916,952.62/99,735.67
  6. Step 6: Final answer
    x = 79,058.14

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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.