Home / 105,479.30-145,555.81-57,723.41

Finding the Fourth Proportional to 105,479.30, 145,555.81 and 57,723.41

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Solution

The fourth proportional to 105,479.30, 145,555.81 and 57,723.41 is: 79,655.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,479.30 : 145,555.81 = 57,723.41 : x
  2. Step 2: Convert to fraction form
    105,479.30/145,555.81 = 57,723.41/x
  3. Step 3: Cross multiply
    105,479.30x = 145,555.81 × 57,723.41
  4. Step 4: Simplify right side
    105,479.30x = 8,401,977,409.90
  5. Step 5: Solve for x
    x = 8,401,977,409.90/105,479.30
  6. Step 6: Final answer
    x = 79,655.23

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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.