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Finding the Fourth Proportional to 101,356.85, 139,861.74 and 56,027.53

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Solution

The fourth proportional to 101,356.85, 139,861.74 and 56,027.53 is: 77,312.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,356.85 : 139,861.74 = 56,027.53 : x
  2. Step 2: Convert to fraction form
    101,356.85/139,861.74 = 56,027.53/x
  3. Step 3: Cross multiply
    101,356.85x = 139,861.74 × 56,027.53
  4. Step 4: Simplify right side
    101,356.85x = 7,836,106,854.26
  5. Step 5: Solve for x
    x = 7,836,106,854.26/101,356.85
  6. Step 6: Final answer
    x = 77,312.06

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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.