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Finding the Fourth Proportional to 40,307.20, 60,460.80 and 12,601.60

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Solution

The fourth proportional to 40,307.20, 60,460.80 and 12,601.60 is: 18,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,307.20 : 60,460.80 = 12,601.60 : x
  2. Step 2: Convert to fraction form
    40,307.20/60,460.80 = 12,601.60/x
  3. Step 3: Cross multiply
    40,307.20x = 60,460.80 × 12,601.60
  4. Step 4: Simplify right side
    40,307.20x = 761,902,817.28
  5. Step 5: Solve for x
    x = 761,902,817.28/40,307.20
  6. Step 6: Final answer
    x = 18,902.40

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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.