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Finding the Fourth Proportional to 61,389.60, 92,071.08 and 21,949.44

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Solution

The fourth proportional to 61,389.60, 92,071.08 and 21,949.44 is: 32,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,389.60 : 92,071.08 = 21,949.44 : x
  2. Step 2: Convert to fraction form
    61,389.60/92,071.08 = 21,949.44/x
  3. Step 3: Cross multiply
    61,389.60x = 92,071.08 × 21,949.44
  4. Step 4: Simplify right side
    61,389.60x = 2,020,908,646.20
  5. Step 5: Solve for x
    x = 2,020,908,646.20/61,389.60
  6. Step 6: Final answer
    x = 32,919.40

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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.