Home / 77,985.99-107,612.82-43,991.37

Finding the Fourth Proportional to 77,985.99, 107,612.82 and 43,991.37

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Solution

The fourth proportional to 77,985.99, 107,612.82 and 43,991.37 is: 60,703.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,985.99 : 107,612.82 = 43,991.37 : x
  2. Step 2: Convert to fraction form
    77,985.99/107,612.82 = 43,991.37/x
  3. Step 3: Cross multiply
    77,985.99x = 107,612.82 × 43,991.37
  4. Step 4: Simplify right side
    77,985.99x = 4,734,035,381.36
  5. Step 5: Solve for x
    x = 4,734,035,381.36/77,985.99
  6. Step 6: Final answer
    x = 60,703.66

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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.