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Finding the Fourth Proportional to 68,416.90, 102,624.64 and 21,669.77

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Solution

The fourth proportional to 68,416.90, 102,624.64 and 21,669.77 is: 32,504.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,416.90 : 102,624.64 = 21,669.77 : x
  2. Step 2: Convert to fraction form
    68,416.90/102,624.64 = 21,669.77/x
  3. Step 3: Cross multiply
    68,416.90x = 102,624.64 × 21,669.77
  4. Step 4: Simplify right side
    68,416.90x = 2,223,852,547.52
  5. Step 5: Solve for x
    x = 2,223,852,547.52/68,416.90
  6. Step 6: Final answer
    x = 32,504.43

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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.