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Finding the Fourth Proportional to 103,362.30, 155,022.93 and 28,463.04

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Solution

The fourth proportional to 103,362.30, 155,022.93 and 28,463.04 is: 42,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,362.30 : 155,022.93 = 28,463.04 : x
  2. Step 2: Convert to fraction form
    103,362.30/155,022.93 = 28,463.04/x
  3. Step 3: Cross multiply
    103,362.30x = 155,022.93 × 28,463.04
  4. Step 4: Simplify right side
    103,362.30x = 4,412,423,857.51
  5. Step 5: Solve for x
    x = 4,412,423,857.51/103,362.30
  6. Step 6: Final answer
    x = 42,688.91

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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.