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Finding the Fourth Proportional to 73,158.99, 100,970.14 and 42,960.86

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Solution

The fourth proportional to 73,158.99, 100,970.14 and 42,960.86 is: 59,292.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,158.99 : 100,970.14 = 42,960.86 : x
  2. Step 2: Convert to fraction form
    73,158.99/100,970.14 = 42,960.86/x
  3. Step 3: Cross multiply
    73,158.99x = 100,970.14 × 42,960.86
  4. Step 4: Simplify right side
    73,158.99x = 4,337,763,436.47
  5. Step 5: Solve for x
    x = 4,337,763,436.47/73,158.99
  6. Step 6: Final answer
    x = 59,292.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.