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Finding the Fourth Proportional to 83,643.03, 115,425.95 and 45,917.01

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Solution

The fourth proportional to 83,643.03, 115,425.95 and 45,917.01 is: 63,364.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,643.03 : 115,425.95 = 45,917.01 : x
  2. Step 2: Convert to fraction form
    83,643.03/115,425.95 = 45,917.01/x
  3. Step 3: Cross multiply
    83,643.03x = 115,425.95 × 45,917.01
  4. Step 4: Simplify right side
    83,643.03x = 5,300,014,270.82
  5. Step 5: Solve for x
    x = 5,300,014,270.82/83,643.03
  6. Step 6: Final answer
    x = 63,364.69

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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.