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Finding the Fourth Proportional to 77,331.58, 106,720.54 and 43,340.33

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Solution

The fourth proportional to 77,331.58, 106,720.54 and 43,340.33 is: 59,811.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,331.58 : 106,720.54 = 43,340.33 : x
  2. Step 2: Convert to fraction form
    77,331.58/106,720.54 = 43,340.33/x
  3. Step 3: Cross multiply
    77,331.58x = 106,720.54 × 43,340.33
  4. Step 4: Simplify right side
    77,331.58x = 4,625,303,579.83
  5. Step 5: Solve for x
    x = 4,625,303,579.83/77,331.58
  6. Step 6: Final answer
    x = 59,811.32

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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.