Home / 78,461.60-108,266.40-50,147.20

Finding the Fourth Proportional to 78,461.60, 108,266.40 and 50,147.20

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Solution

The fourth proportional to 78,461.60, 108,266.40 and 50,147.20 is: 69,196.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,461.60 : 108,266.40 = 50,147.20 : x
  2. Step 2: Convert to fraction form
    78,461.60/108,266.40 = 50,147.20/x
  3. Step 3: Cross multiply
    78,461.60x = 108,266.40 × 50,147.20
  4. Step 4: Simplify right side
    78,461.60x = 5,429,256,814.08
  5. Step 5: Solve for x
    x = 5,429,256,814.08/78,461.60
  6. Step 6: Final answer
    x = 69,196.36

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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.