Home / 79,315.31-109,432.94-51,037.40

Finding the Fourth Proportional to 79,315.31, 109,432.94 and 51,037.40

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Solution

The fourth proportional to 79,315.31, 109,432.94 and 51,037.40 is: 70,417.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,315.31 : 109,432.94 = 51,037.40 : x
  2. Step 2: Convert to fraction form
    79,315.31/109,432.94 = 51,037.40/x
  3. Step 3: Cross multiply
    79,315.31x = 109,432.94 × 51,037.40
  4. Step 4: Simplify right side
    79,315.31x = 5,585,171,929.60
  5. Step 5: Solve for x
    x = 5,585,171,929.60/79,315.31
  6. Step 6: Final answer
    x = 70,417.33

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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.