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Finding the Fourth Proportional to 51,159.55, 70,590.80 and 28,497.98

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Solution

The fourth proportional to 51,159.55, 70,590.80 and 28,497.98 is: 39,321.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,159.55 : 70,590.80 = 28,497.98 : x
  2. Step 2: Convert to fraction form
    51,159.55/70,590.80 = 28,497.98/x
  3. Step 3: Cross multiply
    51,159.55x = 70,590.80 × 28,497.98
  4. Step 4: Simplify right side
    51,159.55x = 2,011,694,977.08
  5. Step 5: Solve for x
    x = 2,011,694,977.08/51,159.55
  6. Step 6: Final answer
    x = 39,321.98

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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.