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Finding the Fourth Proportional to 68,952.47, 103,416.28 and 19,020.18

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Solution

The fourth proportional to 68,952.47, 103,416.28 and 19,020.18 is: 28,526.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,952.47 : 103,416.28 = 19,020.18 : x
  2. Step 2: Convert to fraction form
    68,952.47/103,416.28 = 19,020.18/x
  3. Step 3: Cross multiply
    68,952.47x = 103,416.28 × 19,020.18
  4. Step 4: Simplify right side
    68,952.47x = 1,966,996,244.74
  5. Step 5: Solve for x
    x = 1,966,996,244.74/68,952.47
  6. Step 6: Final answer
    x = 28,526.84

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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.