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Finding the Fourth Proportional to 103,590.45, 142,954.02 and 58,878.45

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Solution

The fourth proportional to 103,590.45, 142,954.02 and 58,878.45 is: 81,251.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,590.45 : 142,954.02 = 58,878.45 : x
  2. Step 2: Convert to fraction form
    103,590.45/142,954.02 = 58,878.45/x
  3. Step 3: Cross multiply
    103,590.45x = 142,954.02 × 58,878.45
  4. Step 4: Simplify right side
    103,590.45x = 8,416,911,118.87
  5. Step 5: Solve for x
    x = 8,416,911,118.87/103,590.45
  6. Step 6: Final answer
    x = 81,251.81

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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.