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Finding the Fourth Proportional to 50,798.77, 70,099.84 and 28,138.57

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Solution

The fourth proportional to 50,798.77, 70,099.84 and 28,138.57 is: 38,829.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,798.77 : 70,099.84 = 28,138.57 : x
  2. Step 2: Convert to fraction form
    50,798.77/70,099.84 = 28,138.57/x
  3. Step 3: Cross multiply
    50,798.77x = 70,099.84 × 28,138.57
  4. Step 4: Simplify right side
    50,798.77x = 1,972,509,254.83
  5. Step 5: Solve for x
    x = 1,972,509,254.83/50,798.77
  6. Step 6: Final answer
    x = 38,829.86

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1.5x scale

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.