Home / 65,444.10-90,310.47-39,993.07

Finding the Fourth Proportional to 65,444.10, 90,310.47 and 39,993.07

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Solution

The fourth proportional to 65,444.10, 90,310.47 and 39,993.07 is: 55,188.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,444.10 : 90,310.47 = 39,993.07 : x
  2. Step 2: Convert to fraction form
    65,444.10/90,310.47 = 39,993.07/x
  3. Step 3: Cross multiply
    65,444.10x = 90,310.47 × 39,993.07
  4. Step 4: Simplify right side
    65,444.10x = 3,611,792,600.51
  5. Step 5: Solve for x
    x = 3,611,792,600.51/65,444.10
  6. Step 6: Final answer
    x = 55,188.97

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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.