Home / 65,580.99-90,471.03-38,705.19

Finding the Fourth Proportional to 65,580.99, 90,471.03 and 38,705.19

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Solution

The fourth proportional to 65,580.99, 90,471.03 and 38,705.19 is: 53,395.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,580.99 : 90,471.03 = 38,705.19 : x
  2. Step 2: Convert to fraction form
    65,580.99/90,471.03 = 38,705.19/x
  3. Step 3: Cross multiply
    65,580.99x = 90,471.03 × 38,705.19
  4. Step 4: Simplify right side
    65,580.99x = 3,501,698,405.65
  5. Step 5: Solve for x
    x = 3,501,698,405.65/65,580.99
  6. Step 6: Final answer
    x = 53,395.02

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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.