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Finding the Fourth Proportional to 65,373.32, 90,105.54 and 50,054.60

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Solution

The fourth proportional to 65,373.32, 90,105.54 and 50,054.60 is: 68,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,373.32 : 90,105.54 = 50,054.60 : x
  2. Step 2: Convert to fraction form
    65,373.32/90,105.54 = 50,054.60/x
  3. Step 3: Cross multiply
    65,373.32x = 90,105.54 × 50,054.60
  4. Step 4: Simplify right side
    65,373.32x = 4,510,196,762.48
  5. Step 5: Solve for x
    x = 4,510,196,762.48/65,373.32
  6. Step 6: Final answer
    x = 68,991.40

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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.