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Finding the Fourth Proportional to 60,145.23, 90,216.90 and 20,702.68

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Solution

The fourth proportional to 60,145.23, 90,216.90 and 20,702.68 is: 31,053.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,145.23 : 90,216.90 = 20,702.68 : x
  2. Step 2: Convert to fraction form
    60,145.23/90,216.90 = 20,702.68/x
  3. Step 3: Cross multiply
    60,145.23x = 90,216.90 × 20,702.68
  4. Step 4: Simplify right side
    60,145.23x = 1,867,731,733.32
  5. Step 5: Solve for x
    x = 1,867,731,733.32/60,145.23
  6. Step 6: Final answer
    x = 31,053.70

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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.