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Finding the Fourth Proportional to 77,171.76, 106,510.66 and 45,340.64

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Solution

The fourth proportional to 77,171.76, 106,510.66 and 45,340.64 is: 62,578.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,171.76 : 106,510.66 = 45,340.64 : x
  2. Step 2: Convert to fraction form
    77,171.76/106,510.66 = 45,340.64/x
  3. Step 3: Cross multiply
    77,171.76x = 106,510.66 × 45,340.64
  4. Step 4: Simplify right side
    77,171.76x = 4,829,261,491.22
  5. Step 5: Solve for x
    x = 4,829,261,491.22/77,171.76
  6. Step 6: Final answer
    x = 62,578.09

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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.