Home / 70,128.16-96,777.51-39,912.02

Finding the Fourth Proportional to 70,128.16, 96,777.51 and 39,912.02

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Solution

The fourth proportional to 70,128.16, 96,777.51 and 39,912.02 is: 55,078.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,128.16 : 96,777.51 = 39,912.02 : x
  2. Step 2: Convert to fraction form
    70,128.16/96,777.51 = 39,912.02/x
  3. Step 3: Cross multiply
    70,128.16x = 96,777.51 × 39,912.02
  4. Step 4: Simplify right side
    70,128.16x = 3,862,585,914.67
  5. Step 5: Solve for x
    x = 3,862,585,914.67/70,128.16
  6. Step 6: Final answer
    x = 55,078.96

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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.