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Finding the Fourth Proportional to 60,260.60, 90,390.43 and 18,140.50

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Solution

The fourth proportional to 60,260.60, 90,390.43 and 18,140.50 is: 27,210.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,260.60 : 90,390.43 = 18,140.50 : x
  2. Step 2: Convert to fraction form
    60,260.60/90,390.43 = 18,140.50/x
  3. Step 3: Cross multiply
    60,260.60x = 90,390.43 × 18,140.50
  4. Step 4: Simplify right side
    60,260.60x = 1,639,727,595.42
  5. Step 5: Solve for x
    x = 1,639,727,595.42/60,260.60
  6. Step 6: Final answer
    x = 27,210.61

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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.