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Finding the Fourth Proportional to 80,698.70, 121,011.60 and 36,302.60

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Solution

The fourth proportional to 80,698.70, 121,011.60 and 36,302.60 is: 54,437.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,698.70 : 121,011.60 = 36,302.60 : x
  2. Step 2: Convert to fraction form
    80,698.70/121,011.60 = 36,302.60/x
  3. Step 3: Cross multiply
    80,698.70x = 121,011.60 × 36,302.60
  4. Step 4: Simplify right side
    80,698.70x = 4,393,035,710.16
  5. Step 5: Solve for x
    x = 4,393,035,710.16/80,698.70
  6. Step 6: Final answer
    x = 54,437.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.