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Finding the Fourth Proportional to 74,159.00, 102,339.16 and 40,167.40

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Solution

The fourth proportional to 74,159.00, 102,339.16 and 40,167.40 is: 55,430.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,159.00 : 102,339.16 = 40,167.40 : x
  2. Step 2: Convert to fraction form
    74,159.00/102,339.16 = 40,167.40/x
  3. Step 3: Cross multiply
    74,159.00x = 102,339.16 × 40,167.40
  4. Step 4: Simplify right side
    74,159.00x = 4,110,697,262.85
  5. Step 5: Solve for x
    x = 4,110,697,262.85/74,159.00
  6. Step 6: Final answer
    x = 55,430.87

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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.