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Finding the Fourth Proportional to 70,513.65, 105,671.03 and 38,937.93

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Solution

The fourth proportional to 70,513.65, 105,671.03 and 38,937.93 is: 58,351.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,513.65 : 105,671.03 = 38,937.93 : x
  2. Step 2: Convert to fraction form
    70,513.65/105,671.03 = 38,937.93/x
  3. Step 3: Cross multiply
    70,513.65x = 105,671.03 × 38,937.93
  4. Step 4: Simplify right side
    70,513.65x = 4,114,610,578.21
  5. Step 5: Solve for x
    x = 4,114,610,578.21/70,513.65
  6. Step 6: Final answer
    x = 58,351.97

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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.