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Finding the Fourth Proportional to 101,776.16, 140,447.68 and 56,453.92

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Solution

The fourth proportional to 101,776.16, 140,447.68 and 56,453.92 is: 77,904.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,776.16 : 140,447.68 = 56,453.92 : x
  2. Step 2: Convert to fraction form
    101,776.16/140,447.68 = 56,453.92/x
  3. Step 3: Cross multiply
    101,776.16x = 140,447.68 × 56,453.92
  4. Step 4: Simplify right side
    101,776.16x = 7,928,822,090.91
  5. Step 5: Solve for x
    x = 7,928,822,090.91/101,776.16
  6. Step 6: Final answer
    x = 77,904.51

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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.