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Finding the Fourth Proportional to 65,505.54, 90,388.53 and 36,821.16

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Solution

The fourth proportional to 65,505.54, 90,388.53 and 36,821.16 is: 50,808.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,505.54 : 90,388.53 = 36,821.16 : x
  2. Step 2: Convert to fraction form
    65,505.54/90,388.53 = 36,821.16/x
  3. Step 3: Cross multiply
    65,505.54x = 90,388.53 × 36,821.16
  4. Step 4: Simplify right side
    65,505.54x = 3,328,210,525.29
  5. Step 5: Solve for x
    x = 3,328,210,525.29/65,505.54
  6. Step 6: Final answer
    x = 50,808.08

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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.