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Finding the Fourth Proportional to 78,280.66, 108,083.48 and 48,106.44

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Solution

The fourth proportional to 78,280.66, 108,083.48 and 48,106.44 is: 66,421.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,280.66 : 108,083.48 = 48,106.44 : x
  2. Step 2: Convert to fraction form
    78,280.66/108,083.48 = 48,106.44/x
  3. Step 3: Cross multiply
    78,280.66x = 108,083.48 × 48,106.44
  4. Step 4: Simplify right side
    78,280.66x = 5,199,511,445.61
  5. Step 5: Solve for x
    x = 5,199,511,445.61/78,280.66
  6. Step 6: Final answer
    x = 66,421.41

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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.