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Finding the Fourth Proportional to 76,862.75, 106,070.60 and 43,328.75

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Solution

The fourth proportional to 76,862.75, 106,070.60 and 43,328.75 is: 59,793.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,862.75 : 106,070.60 = 43,328.75 : x
  2. Step 2: Convert to fraction form
    76,862.75/106,070.60 = 43,328.75/x
  3. Step 3: Cross multiply
    76,862.75x = 106,070.60 × 43,328.75
  4. Step 4: Simplify right side
    76,862.75x = 4,595,906,293.11
  5. Step 5: Solve for x
    x = 4,595,906,293.11/76,862.75
  6. Step 6: Final answer
    x = 59,793.68

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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.