Home / 83,702.04-115,528.88-47,912.80

Finding the Fourth Proportional to 83,702.04, 115,528.88 and 47,912.80

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Solution

The fourth proportional to 83,702.04, 115,528.88 and 47,912.80 is: 66,131.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,702.04 : 115,528.88 = 47,912.80 : x
  2. Step 2: Convert to fraction form
    83,702.04/115,528.88 = 47,912.80/x
  3. Step 3: Cross multiply
    83,702.04x = 115,528.88 × 47,912.80
  4. Step 4: Simplify right side
    83,702.04x = 5,535,312,121.66
  5. Step 5: Solve for x
    x = 5,535,312,121.66/83,702.04
  6. Step 6: Final answer
    x = 66,131.15

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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.