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Finding the Fourth Proportional to 48,376.70, 72,455.70 and 28,693.70

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Solution

The fourth proportional to 48,376.70, 72,455.70 and 28,693.70 is: 42,975.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,376.70 : 72,455.70 = 28,693.70 : x
  2. Step 2: Convert to fraction form
    48,376.70/72,455.70 = 28,693.70/x
  3. Step 3: Cross multiply
    48,376.70x = 72,455.70 × 28,693.70
  4. Step 4: Simplify right side
    48,376.70x = 2,079,022,119.09
  5. Step 5: Solve for x
    x = 2,079,022,119.09/48,376.70
  6. Step 6: Final answer
    x = 42,975.69

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1.5x scale

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.