Home / 101,381.47-139,923.79-58,964.60

Finding the Fourth Proportional to 101,381.47, 139,923.79 and 58,964.60

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Solution

The fourth proportional to 101,381.47, 139,923.79 and 58,964.60 is: 81,381.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,381.47 : 139,923.79 = 58,964.60 : x
  2. Step 2: Convert to fraction form
    101,381.47/139,923.79 = 58,964.60/x
  3. Step 3: Cross multiply
    101,381.47x = 139,923.79 × 58,964.60
  4. Step 4: Simplify right side
    101,381.47x = 8,250,550,510.23
  5. Step 5: Solve for x
    x = 8,250,550,510.23/101,381.47
  6. Step 6: Final answer
    x = 81,381.25

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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.