Home / 85,365.46-128,023.94-25,391.51

Finding the Fourth Proportional to 85,365.46, 128,023.94 and 25,391.51

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Solution

The fourth proportional to 85,365.46, 128,023.94 and 25,391.51 is: 38,080.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,365.46 : 128,023.94 = 25,391.51 : x
  2. Step 2: Convert to fraction form
    85,365.46/128,023.94 = 25,391.51/x
  3. Step 3: Cross multiply
    85,365.46x = 128,023.94 × 25,391.51
  4. Step 4: Simplify right side
    85,365.46x = 3,250,721,056.20
  5. Step 5: Solve for x
    x = 3,250,721,056.20/85,365.46
  6. Step 6: Final answer
    x = 38,080.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.