Home / 90,643.25-124,986.85-61,967.58

Finding the Fourth Proportional to 90,643.25, 124,986.85 and 61,967.58

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Solution

The fourth proportional to 90,643.25, 124,986.85 and 61,967.58 is: 85,446.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,643.25 : 124,986.85 = 61,967.58 : x
  2. Step 2: Convert to fraction form
    90,643.25/124,986.85 = 61,967.58/x
  3. Step 3: Cross multiply
    90,643.25x = 124,986.85 × 61,967.58
  4. Step 4: Simplify right side
    90,643.25x = 7,745,132,705.75
  5. Step 5: Solve for x
    x = 7,745,132,705.75/90,643.25
  6. Step 6: Final answer
    x = 85,446.32

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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.