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Finding the Fourth Proportional to 78,276.60, 108,022.14 and 42,466.68

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Solution

The fourth proportional to 78,276.60, 108,022.14 and 42,466.68 is: 58,604.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,276.60 : 108,022.14 = 42,466.68 : x
  2. Step 2: Convert to fraction form
    78,276.60/108,022.14 = 42,466.68/x
  3. Step 3: Cross multiply
    78,276.60x = 108,022.14 × 42,466.68
  4. Step 4: Simplify right side
    78,276.60x = 4,587,341,652.30
  5. Step 5: Solve for x
    x = 4,587,341,652.30/78,276.60
  6. Step 6: Final answer
    x = 58,604.25

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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.