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Finding the Fourth Proportional to 68,344.32, 94,315.30 and 38,128.88

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Solution

The fourth proportional to 68,344.32, 94,315.30 and 38,128.88 is: 52,617.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,344.32 : 94,315.30 = 38,128.88 : x
  2. Step 2: Convert to fraction form
    68,344.32/94,315.30 = 38,128.88/x
  3. Step 3: Cross multiply
    68,344.32x = 94,315.30 × 38,128.88
  4. Step 4: Simplify right side
    68,344.32x = 3,596,136,755.86
  5. Step 5: Solve for x
    x = 3,596,136,755.86/68,344.32
  6. Step 6: Final answer
    x = 52,617.93

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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.