Home / 79,619.71-109,862.65-45,621.66

Finding the Fourth Proportional to 79,619.71, 109,862.65 and 45,621.66

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Solution

The fourth proportional to 79,619.71, 109,862.65 and 45,621.66 is: 62,950.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,619.71 : 109,862.65 = 45,621.66 : x
  2. Step 2: Convert to fraction form
    79,619.71/109,862.65 = 45,621.66/x
  3. Step 3: Cross multiply
    79,619.71x = 109,862.65 × 45,621.66
  4. Step 4: Simplify right side
    79,619.71x = 5,012,116,135.36
  5. Step 5: Solve for x
    x = 5,012,116,135.36/79,619.71
  6. Step 6: Final answer
    x = 62,950.70

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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.