Home / 78,420.20-117,630.06-22,260.35

Finding the Fourth Proportional to 78,420.20, 117,630.06 and 22,260.35

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Solution

The fourth proportional to 78,420.20, 117,630.06 and 22,260.35 is: 33,390.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,420.20 : 117,630.06 = 22,260.35 : x
  2. Step 2: Convert to fraction form
    78,420.20/117,630.06 = 22,260.35/x
  3. Step 3: Cross multiply
    78,420.20x = 117,630.06 × 22,260.35
  4. Step 4: Simplify right side
    78,420.20x = 2,618,486,643.31
  5. Step 5: Solve for x
    x = 2,618,486,643.31/78,420.20
  6. Step 6: Final answer
    x = 33,390.46

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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.