Home / 83,784.25-115,622.28-47,986.12

Finding the Fourth Proportional to 83,784.25, 115,622.28 and 47,986.12

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Solution

The fourth proportional to 83,784.25, 115,622.28 and 47,986.12 is: 66,220.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,784.25 : 115,622.28 = 47,986.12 : x
  2. Step 2: Convert to fraction form
    83,784.25/115,622.28 = 47,986.12/x
  3. Step 3: Cross multiply
    83,784.25x = 115,622.28 × 47,986.12
  4. Step 4: Simplify right side
    83,784.25x = 5,548,264,602.75
  5. Step 5: Solve for x
    x = 5,548,264,602.75/83,784.25
  6. Step 6: Final answer
    x = 66,220.85

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1.5x scale

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.