Home / 78,233.20-117,349.80-25,644.40

Finding the Fourth Proportional to 78,233.20, 117,349.80 and 25,644.40

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Solution

The fourth proportional to 78,233.20, 117,349.80 and 25,644.40 is: 38,466.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,233.20 : 117,349.80 = 25,644.40 : x
  2. Step 2: Convert to fraction form
    78,233.20/117,349.80 = 25,644.40/x
  3. Step 3: Cross multiply
    78,233.20x = 117,349.80 × 25,644.40
  4. Step 4: Simplify right side
    78,233.20x = 3,009,365,211.12
  5. Step 5: Solve for x
    x = 3,009,365,211.12/78,233.20
  6. Step 6: Final answer
    x = 38,466.60

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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.