Home / 51,319.21-70,816.47-28,656.43

Finding the Fourth Proportional to 51,319.21, 70,816.47 and 28,656.43

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Solution

The fourth proportional to 51,319.21, 70,816.47 and 28,656.43 is: 39,543.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,319.21 : 70,816.47 = 28,656.43 : x
  2. Step 2: Convert to fraction form
    51,319.21/70,816.47 = 28,656.43/x
  3. Step 3: Cross multiply
    51,319.21x = 70,816.47 × 28,656.43
  4. Step 4: Simplify right side
    51,319.21x = 2,029,347,215.40
  5. Step 5: Solve for x
    x = 2,029,347,215.40/51,319.21
  6. Step 6: Final answer
    x = 39,543.62

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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.