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Finding the Fourth Proportional to 101,363.87, 139,878.01 and 56,038.97

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Solution

The fourth proportional to 101,363.87, 139,878.01 and 56,038.97 is: 77,331.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,363.87 : 139,878.01 = 56,038.97 : x
  2. Step 2: Convert to fraction form
    101,363.87/139,878.01 = 56,038.97/x
  3. Step 3: Cross multiply
    101,363.87x = 139,878.01 × 56,038.97
  4. Step 4: Simplify right side
    101,363.87x = 7,838,619,606.05
  5. Step 5: Solve for x
    x = 7,838,619,606.05/101,363.87
  6. Step 6: Final answer
    x = 77,331.49

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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.