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Finding the Fourth Proportional to 101,374.40, 139,891.02 and 56,049.66

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Solution

The fourth proportional to 101,374.40, 139,891.02 and 56,049.66 is: 77,345.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,374.40 : 139,891.02 = 56,049.66 : x
  2. Step 2: Convert to fraction form
    101,374.40/139,891.02 = 56,049.66/x
  3. Step 3: Cross multiply
    101,374.40x = 139,891.02 × 56,049.66
  4. Step 4: Simplify right side
    101,374.40x = 7,840,843,937.60
  5. Step 5: Solve for x
    x = 7,840,843,937.60/101,374.40
  6. Step 6: Final answer
    x = 77,345.41

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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.