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Finding the Fourth Proportional to 78,127.56, 107,822.70 and 44,142.32

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Solution

The fourth proportional to 78,127.56, 107,822.70 and 44,142.32 is: 60,920.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,127.56 : 107,822.70 = 44,142.32 : x
  2. Step 2: Convert to fraction form
    78,127.56/107,822.70 = 44,142.32/x
  3. Step 3: Cross multiply
    78,127.56x = 107,822.70 × 44,142.32
  4. Step 4: Simplify right side
    78,127.56x = 4,759,544,126.66
  5. Step 5: Solve for x
    x = 4,759,544,126.66/78,127.56
  6. Step 6: Final answer
    x = 60,920.17

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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.