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Finding the Fourth Proportional to 98,704.53, 136,208.63 and 56,254.86

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Solution

The fourth proportional to 98,704.53, 136,208.63 and 56,254.86 is: 77,629.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,704.53 : 136,208.63 = 56,254.86 : x
  2. Step 2: Convert to fraction form
    98,704.53/136,208.63 = 56,254.86/x
  3. Step 3: Cross multiply
    98,704.53x = 136,208.63 × 56,254.86
  4. Step 4: Simplify right side
    98,704.53x = 7,662,397,411.44
  5. Step 5: Solve for x
    x = 7,662,397,411.44/98,704.53
  6. Step 6: Final answer
    x = 77,629.64

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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.