Home / 65,395.16-90,257.08-38,536.10

Finding the Fourth Proportional to 65,395.16, 90,257.08 and 38,536.10

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Solution

The fourth proportional to 65,395.16, 90,257.08 and 38,536.10 is: 53,186.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,395.16 : 90,257.08 = 38,536.10 : x
  2. Step 2: Convert to fraction form
    65,395.16/90,257.08 = 38,536.10/x
  3. Step 3: Cross multiply
    65,395.16x = 90,257.08 × 38,536.10
  4. Step 4: Simplify right side
    65,395.16x = 3,478,155,860.59
  5. Step 5: Solve for x
    x = 3,478,155,860.59/65,395.16
  6. Step 6: Final answer
    x = 53,186.75

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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.