Home / 39,109.78-53,957.34-25,688.30

Finding the Fourth Proportional to 39,109.78, 53,957.34 and 25,688.30

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Solution

The fourth proportional to 39,109.78, 53,957.34 and 25,688.30 is: 35,440.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,109.78 : 53,957.34 = 25,688.30 : x
  2. Step 2: Convert to fraction form
    39,109.78/53,957.34 = 25,688.30/x
  3. Step 3: Cross multiply
    39,109.78x = 53,957.34 × 25,688.30
  4. Step 4: Simplify right side
    39,109.78x = 1,386,072,337.12
  5. Step 5: Solve for x
    x = 1,386,072,337.12/39,109.78
  6. Step 6: Final answer
    x = 35,440.56

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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.