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Finding the Fourth Proportional to 68,573.10, 102,859.65 and 42,192.30

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Solution

The fourth proportional to 68,573.10, 102,859.65 and 42,192.30 is: 63,288.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,573.10 : 102,859.65 = 42,192.30 : x
  2. Step 2: Convert to fraction form
    68,573.10/102,859.65 = 42,192.30/x
  3. Step 3: Cross multiply
    68,573.10x = 102,859.65 × 42,192.30
  4. Step 4: Simplify right side
    68,573.10x = 4,339,885,210.70
  5. Step 5: Solve for x
    x = 4,339,885,210.70/68,573.10
  6. Step 6: Final answer
    x = 63,288.45

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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.