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Finding the Fourth Proportional to 40,980.64, 61,442.88 and 14,684.80

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Solution

The fourth proportional to 40,980.64, 61,442.88 and 14,684.80 is: 22,017.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,980.64 : 61,442.88 = 14,684.80 : x
  2. Step 2: Convert to fraction form
    40,980.64/61,442.88 = 14,684.80/x
  3. Step 3: Cross multiply
    40,980.64x = 61,442.88 × 14,684.80
  4. Step 4: Simplify right side
    40,980.64x = 902,276,404.22
  5. Step 5: Solve for x
    x = 902,276,404.22/40,980.64
  6. Step 6: Final answer
    x = 22,017.14

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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.