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Finding the Fourth Proportional to 51,370.26, 70,881.91 and 28,702

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Solution

The fourth proportional to 51,370.26, 70,881.91 and 28,702 is: 39,603.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,370.26 : 70,881.91 = 28,702 : x
  2. Step 2: Convert to fraction form
    51,370.26/70,881.91 = 28,702/x
  3. Step 3: Cross multiply
    51,370.26x = 70,881.91 × 28,702
  4. Step 4: Simplify right side
    51,370.26x = 2,034,452,580.82
  5. Step 5: Solve for x
    x = 2,034,452,580.82/51,370.26
  6. Step 6: Final answer
    x = 39,603.70

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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.