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Finding the Fourth Proportional to 68,073.16, 102,117.03 and 20,688.16

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Solution

The fourth proportional to 68,073.16, 102,117.03 and 20,688.16 is: 31,034.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,073.16 : 102,117.03 = 20,688.16 : x
  2. Step 2: Convert to fraction form
    68,073.16/102,117.03 = 20,688.16/x
  3. Step 3: Cross multiply
    68,073.16x = 102,117.03 × 20,688.16
  4. Step 4: Simplify right side
    68,073.16x = 2,112,613,455.36
  5. Step 5: Solve for x
    x = 2,112,613,455.36/68,073.16
  6. Step 6: Final answer
    x = 31,034.46

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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.