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Finding the Fourth Proportional to 65,753.60, 90,740.60 and 60,730.80

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Solution

The fourth proportional to 65,753.60, 90,740.60 and 60,730.80 is: 83,809.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,753.60 : 90,740.60 = 60,730.80 : x
  2. Step 2: Convert to fraction form
    65,753.60/90,740.60 = 60,730.80/x
  3. Step 3: Cross multiply
    65,753.60x = 90,740.60 × 60,730.80
  4. Step 4: Simplify right side
    65,753.60x = 5,510,749,230.48
  5. Step 5: Solve for x
    x = 5,510,749,230.48/65,753.60
  6. Step 6: Final answer
    x = 83,809.09

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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.