Home / 65,559.60-90,448.92-38,688.66

Finding the Fourth Proportional to 65,559.60, 90,448.92 and 38,688.66

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Solution

The fourth proportional to 65,559.60, 90,448.92 and 38,688.66 is: 53,376.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,559.60 : 90,448.92 = 38,688.66 : x
  2. Step 2: Convert to fraction form
    65,559.60/90,448.92 = 38,688.66/x
  3. Step 3: Cross multiply
    65,559.60x = 90,448.92 × 38,688.66
  4. Step 4: Simplify right side
    65,559.60x = 3,499,347,513.25
  5. Step 5: Solve for x
    x = 3,499,347,513.25/65,559.60
  6. Step 6: Final answer
    x = 53,376.58

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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.