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Finding the Fourth Proportional to 101,403.24, 139,941.72 and 58,389.12

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Solution

The fourth proportional to 101,403.24, 139,941.72 and 58,389.12 is: 80,580.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,403.24 : 139,941.72 = 58,389.12 : x
  2. Step 2: Convert to fraction form
    101,403.24/139,941.72 = 58,389.12/x
  3. Step 3: Cross multiply
    101,403.24x = 139,941.72 × 58,389.12
  4. Step 4: Simplify right side
    101,403.24x = 8,171,073,882.09
  5. Step 5: Solve for x
    x = 8,171,073,882.09/101,403.24
  6. Step 6: Final answer
    x = 80,580.01

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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.