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Finding the Fourth Proportional to 101,368.95, 139,876.82 and 56,040.65

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Solution

The fourth proportional to 101,368.95, 139,876.82 and 56,040.65 is: 77,329.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,368.95 : 139,876.82 = 56,040.65 : x
  2. Step 2: Convert to fraction form
    101,368.95/139,876.82 = 56,040.65/x
  3. Step 3: Cross multiply
    101,368.95x = 139,876.82 × 56,040.65
  4. Step 4: Simplify right side
    101,368.95x = 7,838,786,933.15
  5. Step 5: Solve for x
    x = 7,838,786,933.15/101,368.95
  6. Step 6: Final answer
    x = 77,329.27

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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.