Home / 105,479.29-145,555.81-57,723.41

Finding the Fourth Proportional to 105,479.29, 145,555.81 and 57,723.41

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Solution

The fourth proportional to 105,479.29, 145,555.81 and 57,723.41 is: 79,655.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,479.29 : 145,555.81 = 57,723.41 : x
  2. Step 2: Convert to fraction form
    105,479.29/145,555.81 = 57,723.41/x
  3. Step 3: Cross multiply
    105,479.29x = 145,555.81 × 57,723.41
  4. Step 4: Simplify right side
    105,479.29x = 8,401,977,698.51
  5. Step 5: Solve for x
    x = 8,401,977,698.51/105,479.29
  6. Step 6: Final answer
    x = 79,655.24

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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.