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Finding the Fourth Proportional to 101,029.63, 139,393.54 and 57,421.57

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Solution

The fourth proportional to 101,029.63, 139,393.54 and 57,421.57 is: 79,226.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,029.63 : 139,393.54 = 57,421.57 : x
  2. Step 2: Convert to fraction form
    101,029.63/139,393.54 = 57,421.57/x
  3. Step 3: Cross multiply
    101,029.63x = 139,393.54 × 57,421.57
  4. Step 4: Simplify right side
    101,029.63x = 8,004,195,914.66
  5. Step 5: Solve for x
    x = 8,004,195,914.66/101,029.63
  6. Step 6: Final answer
    x = 79,226.22

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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.