Home / 52,639.68-72,642.49-31,137.15

Finding the Fourth Proportional to 52,639.68, 72,642.49 and 31,137.15

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Solution

The fourth proportional to 52,639.68, 72,642.49 and 31,137.15 is: 42,969.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,639.68 : 72,642.49 = 31,137.15 : x
  2. Step 2: Convert to fraction form
    52,639.68/72,642.49 = 31,137.15/x
  3. Step 3: Cross multiply
    52,639.68x = 72,642.49 × 31,137.15
  4. Step 4: Simplify right side
    52,639.68x = 2,261,880,107.50
  5. Step 5: Solve for x
    x = 2,261,880,107.50/52,639.68
  6. Step 6: Final answer
    x = 42,969.11

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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.