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Finding the Fourth Proportional to 56,347.76, 84,479.72 and 34,155.78

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Solution

The fourth proportional to 56,347.76, 84,479.72 and 34,155.78 is: 51,208.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,347.76 : 84,479.72 = 34,155.78 : x
  2. Step 2: Convert to fraction form
    56,347.76/84,479.72 = 34,155.78/x
  3. Step 3: Cross multiply
    56,347.76x = 84,479.72 × 34,155.78
  4. Step 4: Simplify right side
    56,347.76x = 2,885,470,730.78
  5. Step 5: Solve for x
    x = 2,885,470,730.78/56,347.76
  6. Step 6: Final answer
    x = 51,208.26

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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.