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Finding the Fourth Proportional to 64,172.22, 88,555.08 and 35,490

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Solution

The fourth proportional to 64,172.22, 88,555.08 and 35,490 is: 48,974.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,172.22 : 88,555.08 = 35,490 : x
  2. Step 2: Convert to fraction form
    64,172.22/88,555.08 = 35,490/x
  3. Step 3: Cross multiply
    64,172.22x = 88,555.08 × 35,490
  4. Step 4: Simplify right side
    64,172.22x = 3,142,819,789.20
  5. Step 5: Solve for x
    x = 3,142,819,789.20/64,172.22
  6. Step 6: Final answer
    x = 48,974.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.