Home / 65,655.77-91,216.63-64,868.45

Finding the Fourth Proportional to 65,655.77, 91,216.63 and 64,868.45

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Solution

The fourth proportional to 65,655.77, 91,216.63 and 64,868.45 is: 90,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,655.77 : 91,216.63 = 64,868.45 : x
  2. Step 2: Convert to fraction form
    65,655.77/91,216.63 = 64,868.45/x
  3. Step 3: Cross multiply
    65,655.77x = 91,216.63 × 64,868.45
  4. Step 4: Simplify right side
    65,655.77x = 5,917,081,027.33
  5. Step 5: Solve for x
    x = 5,917,081,027.33/65,655.77
  6. Step 6: Final answer
    x = 90,122.79

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.