Home / 78,901.20-118,352.40-26,310.60

Finding the Fourth Proportional to 78,901.20, 118,352.40 and 26,310.60

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Solution

The fourth proportional to 78,901.20, 118,352.40 and 26,310.60 is: 39,466.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,901.20 : 118,352.40 = 26,310.60 : x
  2. Step 2: Convert to fraction form
    78,901.20/118,352.40 = 26,310.60/x
  3. Step 3: Cross multiply
    78,901.20x = 118,352.40 × 26,310.60
  4. Step 4: Simplify right side
    78,901.20x = 3,113,922,655.44
  5. Step 5: Solve for x
    x = 3,113,922,655.44/78,901.20
  6. Step 6: Final answer
    x = 39,466.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.