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Finding the Fourth Proportional to 56,138.76, 77,479.92 and 34,924.80

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Solution

The fourth proportional to 56,138.76, 77,479.92 and 34,924.80 is: 48,201.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,138.76 : 77,479.92 = 34,924.80 : x
  2. Step 2: Convert to fraction form
    56,138.76/77,479.92 = 34,924.80/x
  3. Step 3: Cross multiply
    56,138.76x = 77,479.92 × 34,924.80
  4. Step 4: Simplify right side
    56,138.76x = 2,705,970,710.02
  5. Step 5: Solve for x
    x = 2,705,970,710.02/56,138.76
  6. Step 6: Final answer
    x = 48,201.47

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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.