Home / 77,086.08-106,379.28-42,629.76

Finding the Fourth Proportional to 77,086.08, 106,379.28 and 42,629.76

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Solution

The fourth proportional to 77,086.08, 106,379.28 and 42,629.76 is: 58,829.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,086.08 : 106,379.28 = 42,629.76 : x
  2. Step 2: Convert to fraction form
    77,086.08/106,379.28 = 42,629.76/x
  3. Step 3: Cross multiply
    77,086.08x = 106,379.28 × 42,629.76
  4. Step 4: Simplify right side
    77,086.08x = 4,534,923,175.37
  5. Step 5: Solve for x
    x = 4,534,923,175.37/77,086.08
  6. Step 6: Final answer
    x = 58,829.34

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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.