Home / 66,302.18-91,499.99-40,809.72

Finding the Fourth Proportional to 66,302.18, 91,499.99 and 40,809.72

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Solution

The fourth proportional to 66,302.18, 91,499.99 and 40,809.72 is: 56,319.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,302.18 : 91,499.99 = 40,809.72 : x
  2. Step 2: Convert to fraction form
    66,302.18/91,499.99 = 40,809.72/x
  3. Step 3: Cross multiply
    66,302.18x = 91,499.99 × 40,809.72
  4. Step 4: Simplify right side
    66,302.18x = 3,734,088,767.85
  5. Step 5: Solve for x
    x = 3,734,088,767.85/66,302.18
  6. Step 6: Final answer
    x = 56,319.25

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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.