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Finding the Fourth Proportional to 65,019.08, 89,728.08 and 36,724.88

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Solution

The fourth proportional to 65,019.08, 89,728.08 and 36,724.88 is: 50,681.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,019.08 : 89,728.08 = 36,724.88 : x
  2. Step 2: Convert to fraction form
    65,019.08/89,728.08 = 36,724.88/x
  3. Step 3: Cross multiply
    65,019.08x = 89,728.08 × 36,724.88
  4. Step 4: Simplify right side
    65,019.08x = 3,295,252,970.63
  5. Step 5: Solve for x
    x = 3,295,252,970.63/65,019.08
  6. Step 6: Final answer
    x = 50,681.32

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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.