Home / 64,745.28-89,399.16-50,638.32

Finding the Fourth Proportional to 64,745.28, 89,399.16 and 50,638.32

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Solution

The fourth proportional to 64,745.28, 89,399.16 and 50,638.32 is: 69,920.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,745.28 : 89,399.16 = 50,638.32 : x
  2. Step 2: Convert to fraction form
    64,745.28/89,399.16 = 50,638.32/x
  3. Step 3: Cross multiply
    64,745.28x = 89,399.16 × 50,638.32
  4. Step 4: Simplify right side
    64,745.28x = 4,527,023,271.81
  5. Step 5: Solve for x
    x = 4,527,023,271.81/64,745.28
  6. Step 6: Final answer
    x = 69,920.51

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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.