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Finding the Fourth Proportional to 74,466.88, 102,702 and 63,165.76

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Solution

The fourth proportional to 74,466.88, 102,702 and 63,165.76 is: 87,115.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,466.88 : 102,702 = 63,165.76 : x
  2. Step 2: Convert to fraction form
    74,466.88/102,702 = 63,165.76/x
  3. Step 3: Cross multiply
    74,466.88x = 102,702 × 63,165.76
  4. Step 4: Simplify right side
    74,466.88x = 6,487,249,883.52
  5. Step 5: Solve for x
    x = 6,487,249,883.52/74,466.88
  6. Step 6: Final answer
    x = 87,115.91

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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.