Home / 74,790-103,212.14-40,799.05

Finding the Fourth Proportional to 74,790, 103,212.14 and 40,799.05

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Solution

The fourth proportional to 74,790, 103,212.14 and 40,799.05 is: 56,303.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,790 : 103,212.14 = 40,799.05 : x
  2. Step 2: Convert to fraction form
    74,790/103,212.14 = 40,799.05/x
  3. Step 3: Cross multiply
    74,790x = 103,212.14 × 40,799.05
  4. Step 4: Simplify right side
    74,790x = 4,210,956,798.44
  5. Step 5: Solve for x
    x = 4,210,956,798.44/74,790
  6. Step 6: Final answer
    x = 56,303.74

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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.