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Finding the Fourth Proportional to 101,049.69, 139,445.22 and 55,728.48

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Solution

The fourth proportional to 101,049.69, 139,445.22 and 55,728.48 is: 76,903.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,049.69 : 139,445.22 = 55,728.48 : x
  2. Step 2: Convert to fraction form
    101,049.69/139,445.22 = 55,728.48/x
  3. Step 3: Cross multiply
    101,049.69x = 139,445.22 × 55,728.48
  4. Step 4: Simplify right side
    101,049.69x = 7,771,070,153.87
  5. Step 5: Solve for x
    x = 7,771,070,153.87/101,049.69
  6. Step 6: Final answer
    x = 76,903.45

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1.5x scale

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.