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Finding the Fourth Proportional to 83,960.72, 115,864.32 and 48,148.64

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Solution

The fourth proportional to 83,960.72, 115,864.32 and 48,148.64 is: 66,444.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,960.72 : 115,864.32 = 48,148.64 : x
  2. Step 2: Convert to fraction form
    83,960.72/115,864.32 = 48,148.64/x
  3. Step 3: Cross multiply
    83,960.72x = 115,864.32 × 48,148.64
  4. Step 4: Simplify right side
    83,960.72x = 5,578,709,432.52
  5. Step 5: Solve for x
    x = 5,578,709,432.52/83,960.72
  6. Step 6: Final answer
    x = 66,444.28

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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.