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Finding the Fourth Proportional to 103,341.63, 155,013.29 and 28,465.91

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Solution

The fourth proportional to 103,341.63, 155,013.29 and 28,465.91 is: 42,699.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,341.63 : 155,013.29 = 28,465.91 : x
  2. Step 2: Convert to fraction form
    103,341.63/155,013.29 = 28,465.91/x
  3. Step 3: Cross multiply
    103,341.63x = 155,013.29 × 28,465.91
  4. Step 4: Simplify right side
    103,341.63x = 4,412,593,444.55
  5. Step 5: Solve for x
    x = 4,412,593,444.55/103,341.63
  6. Step 6: Final answer
    x = 42,699.09

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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.