Home / 86,845.28-130,128.60-53,466.80

Finding the Fourth Proportional to 86,845.28, 130,128.60 and 53,466.80

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Solution

The fourth proportional to 86,845.28, 130,128.60 and 53,466.80 is: 80,114.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,845.28 : 130,128.60 = 53,466.80 : x
  2. Step 2: Convert to fraction form
    86,845.28/130,128.60 = 53,466.80/x
  3. Step 3: Cross multiply
    86,845.28x = 130,128.60 × 53,466.80
  4. Step 4: Simplify right side
    86,845.28x = 6,957,559,830.48
  5. Step 5: Solve for x
    x = 6,957,559,830.48/86,845.28
  6. Step 6: Final answer
    x = 80,114.43

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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.