Home / 77,971.21-107,600.33-42,161.24

Finding the Fourth Proportional to 77,971.21, 107,600.33 and 42,161.24

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Solution

The fourth proportional to 77,971.21, 107,600.33 and 42,161.24 is: 58,182.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,971.21 : 107,600.33 = 42,161.24 : x
  2. Step 2: Convert to fraction form
    77,971.21/107,600.33 = 42,161.24/x
  3. Step 3: Cross multiply
    77,971.21x = 107,600.33 × 42,161.24
  4. Step 4: Simplify right side
    77,971.21x = 4,536,563,126.40
  5. Step 5: Solve for x
    x = 4,536,563,126.40/77,971.21
  6. Step 6: Final answer
    x = 58,182.54

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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.