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Finding the Fourth Proportional to 83,615.36, 115,388.88 and 45,889.52

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Solution

The fourth proportional to 83,615.36, 115,388.88 and 45,889.52 is: 63,327.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,615.36 : 115,388.88 = 45,889.52 : x
  2. Step 2: Convert to fraction form
    83,615.36/115,388.88 = 45,889.52/x
  3. Step 3: Cross multiply
    83,615.36x = 115,388.88 × 45,889.52
  4. Step 4: Simplify right side
    83,615.36x = 5,295,140,316.54
  5. Step 5: Solve for x
    x = 5,295,140,316.54/83,615.36
  6. Step 6: Final answer
    x = 63,327.36

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1.5x scale

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.