Home / 78,276.60-108,021.62-42,466.60

Finding the Fourth Proportional to 78,276.60, 108,021.62 and 42,466.60

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Solution

The fourth proportional to 78,276.60, 108,021.62 and 42,466.60 is: 58,603.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,276.60 : 108,021.62 = 42,466.60 : x
  2. Step 2: Convert to fraction form
    78,276.60/108,021.62 = 42,466.60/x
  3. Step 3: Cross multiply
    78,276.60x = 108,021.62 × 42,466.60
  4. Step 4: Simplify right side
    78,276.60x = 4,587,310,927.89
  5. Step 5: Solve for x
    x = 4,587,310,927.89/78,276.60
  6. Step 6: Final answer
    x = 58,603.86

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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.