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Finding the Fourth Proportional to 50,928, 70,280.88 and 28,572

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Solution

The fourth proportional to 50,928, 70,280.88 and 28,572 is: 39,429.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,928 : 70,280.88 = 28,572 : x
  2. Step 2: Convert to fraction form
    50,928/70,280.88 = 28,572/x
  3. Step 3: Cross multiply
    50,928x = 70,280.88 × 28,572
  4. Step 4: Simplify right side
    50,928x = 2,008,065,303.36
  5. Step 5: Solve for x
    x = 2,008,065,303.36/50,928
  6. Step 6: Final answer
    x = 39,429.49

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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.