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Finding the Fourth Proportional to 101,275.80, 139,762.07 and 55,954.83

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Solution

The fourth proportional to 101,275.80, 139,762.07 and 55,954.83 is: 77,218.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,275.80 : 139,762.07 = 55,954.83 : x
  2. Step 2: Convert to fraction form
    101,275.80/139,762.07 = 55,954.83/x
  3. Step 3: Cross multiply
    101,275.80x = 139,762.07 × 55,954.83
  4. Step 4: Simplify right side
    101,275.80x = 7,820,362,587.52
  5. Step 5: Solve for x
    x = 7,820,362,587.52/101,275.80
  6. Step 6: Final answer
    x = 77,218.47

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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.