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Finding the Fourth Proportional to 101,048.74, 139,445.41 and 55,730.93

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Solution

The fourth proportional to 101,048.74, 139,445.41 and 55,730.93 is: 76,907.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,048.74 : 139,445.41 = 55,730.93 : x
  2. Step 2: Convert to fraction form
    101,048.74/139,445.41 = 55,730.93/x
  3. Step 3: Cross multiply
    101,048.74x = 139,445.41 × 55,730.93
  4. Step 4: Simplify right side
    101,048.74x = 7,771,422,383.53
  5. Step 5: Solve for x
    x = 7,771,422,383.53/101,048.74
  6. Step 6: Final answer
    x = 76,907.66

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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.