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Finding the Fourth Proportional to 51,422.98, 70,960.88 and 28,762.88

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Solution

The fourth proportional to 51,422.98, 70,960.88 and 28,762.88 is: 39,691.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,422.98 : 70,960.88 = 28,762.88 : x
  2. Step 2: Convert to fraction form
    51,422.98/70,960.88 = 28,762.88/x
  3. Step 3: Cross multiply
    51,422.98x = 70,960.88 × 28,762.88
  4. Step 4: Simplify right side
    51,422.98x = 2,041,039,276.13
  5. Step 5: Solve for x
    x = 2,041,039,276.13/51,422.98
  6. Step 6: Final answer
    x = 39,691.19

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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.