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Finding the Fourth Proportional to 101,053.55, 139,455 and 55,733.45

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Solution

The fourth proportional to 101,053.55, 139,455 and 55,733.45 is: 76,912.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,053.55 : 139,455 = 55,733.45 : x
  2. Step 2: Convert to fraction form
    101,053.55/139,455 = 55,733.45/x
  3. Step 3: Cross multiply
    101,053.55x = 139,455 × 55,733.45
  4. Step 4: Simplify right side
    101,053.55x = 7,772,308,269.75
  5. Step 5: Solve for x
    x = 7,772,308,269.75/101,053.55
  6. Step 6: Final answer
    x = 76,912.77

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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.