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Finding the Fourth Proportional to 99,516.51, 137,334.51 and 56,494.89

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Solution

The fourth proportional to 99,516.51, 137,334.51 and 56,494.89 is: 77,963.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,516.51 : 137,334.51 = 56,494.89 : x
  2. Step 2: Convert to fraction form
    99,516.51/137,334.51 = 56,494.89/x
  3. Step 3: Cross multiply
    99,516.51x = 137,334.51 × 56,494.89
  4. Step 4: Simplify right side
    99,516.51x = 7,758,698,035.65
  5. Step 5: Solve for x
    x = 7,758,698,035.65/99,516.51
  6. Step 6: Final answer
    x = 77,963.93

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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.