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Finding the Fourth Proportional to 68,999.64, 103,630.68 and 42,886.92

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Solution

The fourth proportional to 68,999.64, 103,630.68 and 42,886.92 is: 64,411.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,999.64 : 103,630.68 = 42,886.92 : x
  2. Step 2: Convert to fraction form
    68,999.64/103,630.68 = 42,886.92/x
  3. Step 3: Cross multiply
    68,999.64x = 103,630.68 × 42,886.92
  4. Step 4: Simplify right side
    68,999.64x = 4,444,400,682.71
  5. Step 5: Solve for x
    x = 4,444,400,682.71/68,999.64
  6. Step 6: Final answer
    x = 64,411.94

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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.