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Finding the Fourth Proportional to 51,363.16, 70,879.80 and 28,702.34

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Solution

The fourth proportional to 51,363.16, 70,879.80 and 28,702.34 is: 39,608.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,363.16 : 70,879.80 = 28,702.34 : x
  2. Step 2: Convert to fraction form
    51,363.16/70,879.80 = 28,702.34/x
  3. Step 3: Cross multiply
    51,363.16x = 70,879.80 × 28,702.34
  4. Step 4: Simplify right side
    51,363.16x = 2,034,416,118.73
  5. Step 5: Solve for x
    x = 2,034,416,118.73/51,363.16
  6. Step 6: Final answer
    x = 39,608.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.