Home / 65,440.56-90,309.06-63,177.60

Finding the Fourth Proportional to 65,440.56, 90,309.06 and 63,177.60

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Solution

The fourth proportional to 65,440.56, 90,309.06 and 63,177.60 is: 87,186.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,440.56 : 90,309.06 = 63,177.60 : x
  2. Step 2: Convert to fraction form
    65,440.56/90,309.06 = 63,177.60/x
  3. Step 3: Cross multiply
    65,440.56x = 90,309.06 × 63,177.60
  4. Step 4: Simplify right side
    65,440.56x = 5,705,509,669.06
  5. Step 5: Solve for x
    x = 5,705,509,669.06/65,440.56
  6. Step 6: Final answer
    x = 87,186.14

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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.