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Finding the Fourth Proportional to 77,987.16, 107,610.21 and 43,994.16

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Solution

The fourth proportional to 77,987.16, 107,610.21 and 43,994.16 is: 60,705.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,987.16 : 107,610.21 = 43,994.16 : x
  2. Step 2: Convert to fraction form
    77,987.16/107,610.21 = 43,994.16/x
  3. Step 3: Cross multiply
    77,987.16x = 107,610.21 × 43,994.16
  4. Step 4: Simplify right side
    77,987.16x = 4,734,220,796.37
  5. Step 5: Solve for x
    x = 4,734,220,796.37/77,987.16
  6. Step 6: Final answer
    x = 60,705.13

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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.