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Finding the Fourth Proportional to 103,808.77, 143,256.09 and 56,062.11

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Solution

The fourth proportional to 103,808.77, 143,256.09 and 56,062.11 is: 77,365.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,808.77 : 143,256.09 = 56,062.11 : x
  2. Step 2: Convert to fraction form
    103,808.77/143,256.09 = 56,062.11/x
  3. Step 3: Cross multiply
    103,808.77x = 143,256.09 × 56,062.11
  4. Step 4: Simplify right side
    103,808.77x = 8,031,237,928.31
  5. Step 5: Solve for x
    x = 8,031,237,928.31/103,808.77
  6. Step 6: Final answer
    x = 77,365.70

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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.