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Finding the Fourth Proportional to 101,682.63, 140,330.43 and 56,374.82

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Solution

The fourth proportional to 101,682.63, 140,330.43 and 56,374.82 is: 77,801.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,682.63 : 140,330.43 = 56,374.82 : x
  2. Step 2: Convert to fraction form
    101,682.63/140,330.43 = 56,374.82/x
  3. Step 3: Cross multiply
    101,682.63x = 140,330.43 × 56,374.82
  4. Step 4: Simplify right side
    101,682.63x = 7,911,102,731.77
  5. Step 5: Solve for x
    x = 7,911,102,731.77/101,682.63
  6. Step 6: Final answer
    x = 77,801.91

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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.