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Finding the Fourth Proportional to 77,077.76, 115,616.64 and 21,673.76

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Solution

The fourth proportional to 77,077.76, 115,616.64 and 21,673.76 is: 32,510.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,077.76 : 115,616.64 = 21,673.76 : x
  2. Step 2: Convert to fraction form
    77,077.76/115,616.64 = 21,673.76/x
  3. Step 3: Cross multiply
    77,077.76x = 115,616.64 × 21,673.76
  4. Step 4: Simplify right side
    77,077.76x = 2,505,847,307.37
  5. Step 5: Solve for x
    x = 2,505,847,307.37/77,077.76
  6. Step 6: Final answer
    x = 32,510.64

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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.