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Finding the Fourth Proportional to 84,019.67, 115,948.47 and 45,781.02

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Solution

The fourth proportional to 84,019.67, 115,948.47 and 45,781.02 is: 63,178.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,019.67 : 115,948.47 = 45,781.02 : x
  2. Step 2: Convert to fraction form
    84,019.67/115,948.47 = 45,781.02/x
  3. Step 3: Cross multiply
    84,019.67x = 115,948.47 × 45,781.02
  4. Step 4: Simplify right side
    84,019.67x = 5,308,239,224.04
  5. Step 5: Solve for x
    x = 5,308,239,224.04/84,019.67
  6. Step 6: Final answer
    x = 63,178.53

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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.