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Finding the Fourth Proportional to 60,145.67, 90,217.55 and 20,703.12

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Solution

The fourth proportional to 60,145.67, 90,217.55 and 20,703.12 is: 31,054.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,145.67 : 90,217.55 = 20,703.12 : x
  2. Step 2: Convert to fraction form
    60,145.67/90,217.55 = 20,703.12/x
  3. Step 3: Cross multiply
    60,145.67x = 90,217.55 × 20,703.12
  4. Step 4: Simplify right side
    60,145.67x = 1,867,784,815.51
  5. Step 5: Solve for x
    x = 1,867,784,815.51/60,145.67
  6. Step 6: Final answer
    x = 31,054.35

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Double scale
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Similar ratio
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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.