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Finding the Fourth Proportional to 56,881.28, 78,480.42 and 36,739.01

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Solution

The fourth proportional to 56,881.28, 78,480.42 and 36,739.01 is: 50,689.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,881.28 : 78,480.42 = 36,739.01 : x
  2. Step 2: Convert to fraction form
    56,881.28/78,480.42 = 36,739.01/x
  3. Step 3: Cross multiply
    56,881.28x = 78,480.42 × 36,739.01
  4. Step 4: Simplify right side
    56,881.28x = 2,883,292,935.18
  5. Step 5: Solve for x
    x = 2,883,292,935.18/56,881.28
  6. Step 6: Final answer
    x = 50,689.66

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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.