Home / 65,317.36-90,139.44-35,509.36

Finding the Fourth Proportional to 65,317.36, 90,139.44 and 35,509.36

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Solution

The fourth proportional to 65,317.36, 90,139.44 and 35,509.36 is: 49,003.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,317.36 : 90,139.44 = 35,509.36 : x
  2. Step 2: Convert to fraction form
    65,317.36/90,139.44 = 35,509.36/x
  3. Step 3: Cross multiply
    65,317.36x = 90,139.44 × 35,509.36
  4. Step 4: Simplify right side
    65,317.36x = 3,200,793,825.16
  5. Step 5: Solve for x
    x = 3,200,793,825.16/65,317.36
  6. Step 6: Final answer
    x = 49,003.72

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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.