Home / 65,564.68-90,474.60-38,705.80

Finding the Fourth Proportional to 65,564.68, 90,474.60 and 38,705.80

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Solution

The fourth proportional to 65,564.68, 90,474.60 and 38,705.80 is: 53,411.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,564.68 : 90,474.60 = 38,705.80 : x
  2. Step 2: Convert to fraction form
    65,564.68/90,474.60 = 38,705.80/x
  3. Step 3: Cross multiply
    65,564.68x = 90,474.60 × 38,705.80
  4. Step 4: Simplify right side
    65,564.68x = 3,501,891,772.68
  5. Step 5: Solve for x
    x = 3,501,891,772.68/65,564.68
  6. Step 6: Final answer
    x = 53,411.25

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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.