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Finding the Fourth Proportional to 68,538.60, 102,807.90 and 24,215.40

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Solution

The fourth proportional to 68,538.60, 102,807.90 and 24,215.40 is: 36,323.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,538.60 : 102,807.90 = 24,215.40 : x
  2. Step 2: Convert to fraction form
    68,538.60/102,807.90 = 24,215.40/x
  3. Step 3: Cross multiply
    68,538.60x = 102,807.90 × 24,215.40
  4. Step 4: Simplify right side
    68,538.60x = 2,489,534,421.66
  5. Step 5: Solve for x
    x = 2,489,534,421.66/68,538.60
  6. Step 6: Final answer
    x = 36,323.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.