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Finding the Fourth Proportional to 77,388.80, 116,063.72 and 29,987.63

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Solution

The fourth proportional to 77,388.80, 116,063.72 and 29,987.63 is: 44,973.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,388.80 : 116,063.72 = 29,987.63 : x
  2. Step 2: Convert to fraction form
    77,388.80/116,063.72 = 29,987.63/x
  3. Step 3: Cross multiply
    77,388.80x = 116,063.72 × 29,987.63
  4. Step 4: Simplify right side
    77,388.80x = 3,480,475,382.79
  5. Step 5: Solve for x
    x = 3,480,475,382.79/77,388.80
  6. Step 6: Final answer
    x = 44,973.89

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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.