Home / 77,985.59-107,621.33-43,994.72

Finding the Fourth Proportional to 77,985.59, 107,621.33 and 43,994.72

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Solution

The fourth proportional to 77,985.59, 107,621.33 and 43,994.72 is: 60,713.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,985.59 : 107,621.33 = 43,994.72 : x
  2. Step 2: Convert to fraction form
    77,985.59/107,621.33 = 43,994.72/x
  3. Step 3: Cross multiply
    77,985.59x = 107,621.33 × 43,994.72
  4. Step 4: Simplify right side
    77,985.59x = 4,734,770,328.46
  5. Step 5: Solve for x
    x = 4,734,770,328.46/77,985.59
  6. Step 6: Final answer
    x = 60,713.40

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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.