Home / 83,277.12-124,915.84-20,947.20

Finding the Fourth Proportional to 83,277.12, 124,915.84 and 20,947.20

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Solution

The fourth proportional to 83,277.12, 124,915.84 and 20,947.20 is: 31,420.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,277.12 : 124,915.84 = 20,947.20 : x
  2. Step 2: Convert to fraction form
    83,277.12/124,915.84 = 20,947.20/x
  3. Step 3: Cross multiply
    83,277.12x = 124,915.84 × 20,947.20
  4. Step 4: Simplify right side
    83,277.12x = 2,616,637,083.65
  5. Step 5: Solve for x
    x = 2,616,637,083.65/83,277.12
  6. Step 6: Final answer
    x = 31,420.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.