Home / 68,430.24-94,443.12-40,145.04

Finding the Fourth Proportional to 68,430.24, 94,443.12 and 40,145.04

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Solution

The fourth proportional to 68,430.24, 94,443.12 and 40,145.04 is: 55,405.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,430.24 : 94,443.12 = 40,145.04 : x
  2. Step 2: Convert to fraction form
    68,430.24/94,443.12 = 40,145.04/x
  3. Step 3: Cross multiply
    68,430.24x = 94,443.12 × 40,145.04
  4. Step 4: Simplify right side
    68,430.24x = 3,791,422,830.12
  5. Step 5: Solve for x
    x = 3,791,422,830.12/68,430.24
  6. Step 6: Final answer
    x = 55,405.66

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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.