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Finding the Fourth Proportional to 70,207.00, 105,328.96 and 20,291.16

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Solution

The fourth proportional to 70,207.00, 105,328.96 and 20,291.16 is: 30,442.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,207.00 : 105,328.96 = 20,291.16 : x
  2. Step 2: Convert to fraction form
    70,207.00/105,328.96 = 20,291.16/x
  3. Step 3: Cross multiply
    70,207.00x = 105,328.96 × 20,291.16
  4. Step 4: Simplify right side
    70,207.00x = 2,137,246,531.77
  5. Step 5: Solve for x
    x = 2,137,246,531.77/70,207.00
  6. Step 6: Final answer
    x = 30,442.07

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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.