Home / 65,559.10-90,448.23-38,688.16

Finding the Fourth Proportional to 65,559.10, 90,448.23 and 38,688.16

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Solution

The fourth proportional to 65,559.10, 90,448.23 and 38,688.16 is: 53,375.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,559.10 : 90,448.23 = 38,688.16 : x
  2. Step 2: Convert to fraction form
    65,559.10/90,448.23 = 38,688.16/x
  3. Step 3: Cross multiply
    65,559.10x = 90,448.23 × 38,688.16
  4. Step 4: Simplify right side
    65,559.10x = 3,499,275,593.96
  5. Step 5: Solve for x
    x = 3,499,275,593.96/65,559.10
  6. Step 6: Final answer
    x = 53,375.89

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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.