Home / 65,346.03-90,163.75-42,718.32

Finding the Fourth Proportional to 65,346.03, 90,163.75 and 42,718.32

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Solution

The fourth proportional to 65,346.03, 90,163.75 and 42,718.32 is: 58,942.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,346.03 : 90,163.75 = 42,718.32 : x
  2. Step 2: Convert to fraction form
    65,346.03/90,163.75 = 42,718.32/x
  3. Step 3: Cross multiply
    65,346.03x = 90,163.75 × 42,718.32
  4. Step 4: Simplify right side
    65,346.03x = 3,851,643,924.90
  5. Step 5: Solve for x
    x = 3,851,643,924.90/65,346.03
  6. Step 6: Final answer
    x = 58,942.28

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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.