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Finding the Fourth Proportional to 101,041.96, 139,434.69 and 55,721.85

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Solution

The fourth proportional to 101,041.96, 139,434.69 and 55,721.85 is: 76,894.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,041.96 : 139,434.69 = 55,721.85 : x
  2. Step 2: Convert to fraction form
    101,041.96/139,434.69 = 55,721.85/x
  3. Step 3: Cross multiply
    101,041.96x = 139,434.69 × 55,721.85
  4. Step 4: Simplify right side
    101,041.96x = 7,769,558,880.98
  5. Step 5: Solve for x
    x = 7,769,558,880.98/101,041.96
  6. Step 6: Final answer
    x = 76,894.38

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1.5x scale

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.