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Finding the Fourth Proportional to 99,073.78, 148,496.19 and 45,654.07

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Solution

The fourth proportional to 99,073.78, 148,496.19 and 45,654.07 is: 68,428.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,073.78 : 148,496.19 = 45,654.07 : x
  2. Step 2: Convert to fraction form
    99,073.78/148,496.19 = 45,654.07/x
  3. Step 3: Cross multiply
    99,073.78x = 148,496.19 × 45,654.07
  4. Step 4: Simplify right side
    99,073.78x = 6,779,455,452.99
  5. Step 5: Solve for x
    x = 6,779,455,452.99/99,073.78
  6. Step 6: Final answer
    x = 68,428.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.