Home / 65,845.40-90,867.18-38,637.74

Finding the Fourth Proportional to 65,845.40, 90,867.18 and 38,637.74

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Solution

The fourth proportional to 65,845.40, 90,867.18 and 38,637.74 is: 53,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,845.40 : 90,867.18 = 38,637.74 : x
  2. Step 2: Convert to fraction form
    65,845.40/90,867.18 = 38,637.74/x
  3. Step 3: Cross multiply
    65,845.40x = 90,867.18 × 38,637.74
  4. Step 4: Simplify right side
    65,845.40x = 3,510,902,847.43
  5. Step 5: Solve for x
    x = 3,510,902,847.43/65,845.40
  6. Step 6: Final answer
    x = 53,320.40

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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.