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Finding the Fourth Proportional to 84,038.74, 115,971.96 and 45,798.62

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Solution

The fourth proportional to 84,038.74, 115,971.96 and 45,798.62 is: 63,201.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,038.74 : 115,971.96 = 45,798.62 : x
  2. Step 2: Convert to fraction form
    84,038.74/115,971.96 = 45,798.62/x
  3. Step 3: Cross multiply
    84,038.74x = 115,971.96 × 45,798.62
  4. Step 4: Simplify right side
    84,038.74x = 5,311,355,726.70
  5. Step 5: Solve for x
    x = 5,311,355,726.70/84,038.74
  6. Step 6: Final answer
    x = 63,201.28

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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.