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Finding the Fourth Proportional to 55,369.74, 76,407.39 and 31,495.89

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Solution

The fourth proportional to 55,369.74, 76,407.39 and 31,495.89 is: 43,462.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,369.74 : 76,407.39 = 31,495.89 : x
  2. Step 2: Convert to fraction form
    55,369.74/76,407.39 = 31,495.89/x
  3. Step 3: Cross multiply
    55,369.74x = 76,407.39 × 31,495.89
  4. Step 4: Simplify right side
    55,369.74x = 2,406,518,750.63
  5. Step 5: Solve for x
    x = 2,406,518,750.63/55,369.74
  6. Step 6: Final answer
    x = 43,462.71

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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.