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Finding the Fourth Proportional to 101,366.15, 139,879.64 and 56,041.49

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Solution

The fourth proportional to 101,366.15, 139,879.64 and 56,041.49 is: 77,334.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,366.15 : 139,879.64 = 56,041.49 : x
  2. Step 2: Convert to fraction form
    101,366.15/139,879.64 = 56,041.49/x
  3. Step 3: Cross multiply
    101,366.15x = 139,879.64 × 56,041.49
  4. Step 4: Simplify right side
    101,366.15x = 7,839,063,166.06
  5. Step 5: Solve for x
    x = 7,839,063,166.06/101,366.15
  6. Step 6: Final answer
    x = 77,334.13

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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.