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Finding the Fourth Proportional to 45,689.71, 68,533.89 and 12,410.50

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Solution

The fourth proportional to 45,689.71, 68,533.89 and 12,410.50 is: 18,615.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,689.71 : 68,533.89 = 12,410.50 : x
  2. Step 2: Convert to fraction form
    45,689.71/68,533.89 = 12,410.50/x
  3. Step 3: Cross multiply
    45,689.71x = 68,533.89 × 12,410.50
  4. Step 4: Simplify right side
    45,689.71x = 850,539,841.85
  5. Step 5: Solve for x
    x = 850,539,841.85/45,689.71
  6. Step 6: Final answer
    x = 18,615.57

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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.