Home / 81,512.74-122,269.18-65,643.35

Finding the Fourth Proportional to 81,512.74, 122,269.18 and 65,643.35

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Solution

The fourth proportional to 81,512.74, 122,269.18 and 65,643.35 is: 98,465.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,512.74 : 122,269.18 = 65,643.35 : x
  2. Step 2: Convert to fraction form
    81,512.74/122,269.18 = 65,643.35/x
  3. Step 3: Cross multiply
    81,512.74x = 122,269.18 × 65,643.35
  4. Step 4: Simplify right side
    81,512.74x = 8,026,158,412.84
  5. Step 5: Solve for x
    x = 8,026,158,412.84/81,512.74
  6. Step 6: Final answer
    x = 98,465.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.