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Finding the Fourth Proportional to 75,945.60, 104,943.84 and 65,841.60

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Solution

The fourth proportional to 75,945.60, 104,943.84 and 65,841.60 is: 90,981.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,945.60 : 104,943.84 = 65,841.60 : x
  2. Step 2: Convert to fraction form
    75,945.60/104,943.84 = 65,841.60/x
  3. Step 3: Cross multiply
    75,945.60x = 104,943.84 × 65,841.60
  4. Step 4: Simplify right side
    75,945.60x = 6,909,670,335.74
  5. Step 5: Solve for x
    x = 6,909,670,335.74/75,945.60
  6. Step 6: Final answer
    x = 90,981.84

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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.