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Finding the Fourth Proportional to 101,021.52, 139,410.66 and 55,701.30

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Solution

The fourth proportional to 101,021.52, 139,410.66 and 55,701.30 is: 76,868.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,021.52 : 139,410.66 = 55,701.30 : x
  2. Step 2: Convert to fraction form
    101,021.52/139,410.66 = 55,701.30/x
  3. Step 3: Cross multiply
    101,021.52x = 139,410.66 × 55,701.30
  4. Step 4: Simplify right side
    101,021.52x = 7,765,354,995.86
  5. Step 5: Solve for x
    x = 7,765,354,995.86/101,021.52
  6. Step 6: Final answer
    x = 76,868.32

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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.