Home / 64,565.57-89,143.54-40,403.21

Finding the Fourth Proportional to 64,565.57, 89,143.54 and 40,403.21

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Solution

The fourth proportional to 64,565.57, 89,143.54 and 40,403.21 is: 55,783.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,565.57 : 89,143.54 = 40,403.21 : x
  2. Step 2: Convert to fraction form
    64,565.57/89,143.54 = 40,403.21/x
  3. Step 3: Cross multiply
    64,565.57x = 89,143.54 × 40,403.21
  4. Step 4: Simplify right side
    64,565.57x = 3,601,684,620.04
  5. Step 5: Solve for x
    x = 3,601,684,620.04/64,565.57
  6. Step 6: Final answer
    x = 55,783.36

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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.