Home / 70,529.30-105,792.82-28,408.38

Finding the Fourth Proportional to 70,529.30, 105,792.82 and 28,408.38

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Solution

The fourth proportional to 70,529.30, 105,792.82 and 28,408.38 is: 42,612.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,529.30 : 105,792.82 = 28,408.38 : x
  2. Step 2: Convert to fraction form
    70,529.30/105,792.82 = 28,408.38/x
  3. Step 3: Cross multiply
    70,529.30x = 105,792.82 × 28,408.38
  4. Step 4: Simplify right side
    70,529.30x = 3,005,402,631.83
  5. Step 5: Solve for x
    x = 3,005,402,631.83/70,529.30
  6. Step 6: Final answer
    x = 42,612.11

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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.