Home / 105,462.12-145,542.06-57,719.64

Finding the Fourth Proportional to 105,462.12, 145,542.06 and 57,719.64

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Solution

The fourth proportional to 105,462.12, 145,542.06 and 57,719.64 is: 79,655.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,462.12 : 145,542.06 = 57,719.64 : x
  2. Step 2: Convert to fraction form
    105,462.12/145,542.06 = 57,719.64/x
  3. Step 3: Cross multiply
    105,462.12x = 145,542.06 × 57,719.64
  4. Step 4: Simplify right side
    105,462.12x = 8,400,635,308.06
  5. Step 5: Solve for x
    x = 8,400,635,308.06/105,462.12
  6. Step 6: Final answer
    x = 79,655.48

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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.