Home / 87,705.33-121,033.35-47,419.08

Finding the Fourth Proportional to 87,705.33, 121,033.35 and 47,419.08

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Solution

The fourth proportional to 87,705.33, 121,033.35 and 47,419.08 is: 65,438.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,705.33 : 121,033.35 = 47,419.08 : x
  2. Step 2: Convert to fraction form
    87,705.33/121,033.35 = 47,419.08/x
  3. Step 3: Cross multiply
    87,705.33x = 121,033.35 × 47,419.08
  4. Step 4: Simplify right side
    87,705.33x = 5,739,290,106.32
  5. Step 5: Solve for x
    x = 5,739,290,106.32/87,705.33
  6. Step 6: Final answer
    x = 65,438.33

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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.