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Finding the Fourth Proportional to 103,479.88, 155,170.68 and 47,303.32

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Solution

The fourth proportional to 103,479.88, 155,170.68 and 47,303.32 is: 70,932.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,479.88 : 155,170.68 = 47,303.32 : x
  2. Step 2: Convert to fraction form
    103,479.88/155,170.68 = 47,303.32/x
  3. Step 3: Cross multiply
    103,479.88x = 155,170.68 × 47,303.32
  4. Step 4: Simplify right side
    103,479.88x = 7,340,088,330.66
  5. Step 5: Solve for x
    x = 7,340,088,330.66/103,479.88
  6. Step 6: Final answer
    x = 70,932.52

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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.