Home / 65,538.40-90,351.28-55,426.16

Finding the Fourth Proportional to 65,538.40, 90,351.28 and 55,426.16

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Solution

The fourth proportional to 65,538.40, 90,351.28 and 55,426.16 is: 76,410.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,538.40 : 90,351.28 = 55,426.16 : x
  2. Step 2: Convert to fraction form
    65,538.40/90,351.28 = 55,426.16/x
  3. Step 3: Cross multiply
    65,538.40x = 90,351.28 × 55,426.16
  4. Step 4: Simplify right side
    65,538.40x = 5,007,824,501.48
  5. Step 5: Solve for x
    x = 5,007,824,501.48/65,538.40
  6. Step 6: Final answer
    x = 76,410.54

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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.