Home / 65,639.57-90,705.22-53,698.55

Finding the Fourth Proportional to 65,639.57, 90,705.22 and 53,698.55

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Solution

The fourth proportional to 65,639.57, 90,705.22 and 53,698.55 is: 74,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,639.57 : 90,705.22 = 53,698.55 : x
  2. Step 2: Convert to fraction form
    65,639.57/90,705.22 = 53,698.55/x
  3. Step 3: Cross multiply
    65,639.57x = 90,705.22 × 53,698.55
  4. Step 4: Simplify right side
    65,639.57x = 4,870,738,203.66
  5. Step 5: Solve for x
    x = 4,870,738,203.66/65,639.57
  6. Step 6: Final answer
    x = 74,204.30

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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.