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Finding the Fourth Proportional to 74,788.76, 103,208.82 and 40,798.02

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Solution

The fourth proportional to 74,788.76, 103,208.82 and 40,798.02 is: 56,301.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,788.76 : 103,208.82 = 40,798.02 : x
  2. Step 2: Convert to fraction form
    74,788.76/103,208.82 = 40,798.02/x
  3. Step 3: Cross multiply
    74,788.76x = 103,208.82 × 40,798.02
  4. Step 4: Simplify right side
    74,788.76x = 4,210,715,502.54
  5. Step 5: Solve for x
    x = 4,210,715,502.54/74,788.76
  6. Step 6: Final answer
    x = 56,301.45

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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.