Home / 85,749.36-128,632.24-26,569.12

Finding the Fourth Proportional to 85,749.36, 128,632.24 and 26,569.12

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Solution

The fourth proportional to 85,749.36, 128,632.24 and 26,569.12 is: 39,856.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,749.36 : 128,632.24 = 26,569.12 : x
  2. Step 2: Convert to fraction form
    85,749.36/128,632.24 = 26,569.12/x
  3. Step 3: Cross multiply
    85,749.36x = 128,632.24 × 26,569.12
  4. Step 4: Simplify right side
    85,749.36x = 3,417,645,420.43
  5. Step 5: Solve for x
    x = 3,417,645,420.43/85,749.36
  6. Step 6: Final answer
    x = 39,856.22

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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.