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Finding the Fourth Proportional to 74,345.79, 102,597.27 and 40,354.28

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Solution

The fourth proportional to 74,345.79, 102,597.27 and 40,354.28 is: 55,688.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,345.79 : 102,597.27 = 40,354.28 : x
  2. Step 2: Convert to fraction form
    74,345.79/102,597.27 = 40,354.28/x
  3. Step 3: Cross multiply
    74,345.79x = 102,597.27 × 40,354.28
  4. Step 4: Simplify right side
    74,345.79x = 4,140,238,447.83
  5. Step 5: Solve for x
    x = 4,140,238,447.83/74,345.79
  6. Step 6: Final answer
    x = 55,688.94

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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.