Home / 80,915.36-111,663.21-45,104.60

Finding the Fourth Proportional to 80,915.36, 111,663.21 and 45,104.60

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Solution

The fourth proportional to 80,915.36, 111,663.21 and 45,104.60 is: 62,244.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,915.36 : 111,663.21 = 45,104.60 : x
  2. Step 2: Convert to fraction form
    80,915.36/111,663.21 = 45,104.60/x
  3. Step 3: Cross multiply
    80,915.36x = 111,663.21 × 45,104.60
  4. Step 4: Simplify right side
    80,915.36x = 5,036,523,988.25
  5. Step 5: Solve for x
    x = 5,036,523,988.25/80,915.36
  6. Step 6: Final answer
    x = 62,244.35

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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.