Home / 65,895.20-90,911.85-40,392.35

Finding the Fourth Proportional to 65,895.20, 90,911.85 and 40,392.35

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Solution

The fourth proportional to 65,895.20, 90,911.85 and 40,392.35 is: 55,727.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,895.20 : 90,911.85 = 40,392.35 : x
  2. Step 2: Convert to fraction form
    65,895.20/90,911.85 = 40,392.35/x
  3. Step 3: Cross multiply
    65,895.20x = 90,911.85 × 40,392.35
  4. Step 4: Simplify right side
    65,895.20x = 3,672,142,999.24
  5. Step 5: Solve for x
    x = 3,672,142,999.24/65,895.20
  6. Step 6: Final answer
    x = 55,727.02

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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.