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Finding the Fourth Proportional to 77,479.88, 106,900.98 and 47,270.12

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Solution

The fourth proportional to 77,479.88, 106,900.98 and 47,270.12 is: 65,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,479.88 : 106,900.98 = 47,270.12 : x
  2. Step 2: Convert to fraction form
    77,479.88/106,900.98 = 47,270.12/x
  3. Step 3: Cross multiply
    77,479.88x = 106,900.98 × 47,270.12
  4. Step 4: Simplify right side
    77,479.88x = 5,053,222,152.72
  5. Step 5: Solve for x
    x = 5,053,222,152.72/77,479.88
  6. Step 6: Final answer
    x = 65,219.80

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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.