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Finding the Fourth Proportional to 78,883.32, 108,859.02 and 45,347.32

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Solution

The fourth proportional to 78,883.32, 108,859.02 and 45,347.32 is: 62,579.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,883.32 : 108,859.02 = 45,347.32 : x
  2. Step 2: Convert to fraction form
    78,883.32/108,859.02 = 45,347.32/x
  3. Step 3: Cross multiply
    78,883.32x = 108,859.02 × 45,347.32
  4. Step 4: Simplify right side
    78,883.32x = 4,936,464,814.83
  5. Step 5: Solve for x
    x = 4,936,464,814.83/78,883.32
  6. Step 6: Final answer
    x = 62,579.32

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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.