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Finding the Fourth Proportional to 101,362.62, 139,876.29 and 56,037.72

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Solution

The fourth proportional to 101,362.62, 139,876.29 and 56,037.72 is: 77,329.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,362.62 : 139,876.29 = 56,037.72 : x
  2. Step 2: Convert to fraction form
    101,362.62/139,876.29 = 56,037.72/x
  3. Step 3: Cross multiply
    101,362.62x = 139,876.29 × 56,037.72
  4. Step 4: Simplify right side
    101,362.62x = 7,838,348,373.66
  5. Step 5: Solve for x
    x = 7,838,348,373.66/101,362.62
  6. Step 6: Final answer
    x = 77,329.77

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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.