Home / 65,280.16-90,086.40-36,991.24

Finding the Fourth Proportional to 65,280.16, 90,086.40 and 36,991.24

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Solution

The fourth proportional to 65,280.16, 90,086.40 and 36,991.24 is: 51,047.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,280.16 : 90,086.40 = 36,991.24 : x
  2. Step 2: Convert to fraction form
    65,280.16/90,086.40 = 36,991.24/x
  3. Step 3: Cross multiply
    65,280.16x = 90,086.40 × 36,991.24
  4. Step 4: Simplify right side
    65,280.16x = 3,332,407,643.14
  5. Step 5: Solve for x
    x = 3,332,407,643.14/65,280.16
  6. Step 6: Final answer
    x = 51,047.79

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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.