Home / 74,428.68-102,705.62-42,590.28

Finding the Fourth Proportional to 74,428.68, 102,705.62 and 42,590.28

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Solution

The fourth proportional to 74,428.68, 102,705.62 and 42,590.28 is: 58,771.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,428.68 : 102,705.62 = 42,590.28 : x
  2. Step 2: Convert to fraction form
    74,428.68/102,705.62 = 42,590.28/x
  3. Step 3: Cross multiply
    74,428.68x = 102,705.62 × 42,590.28
  4. Step 4: Simplify right side
    74,428.68x = 4,374,261,113.37
  5. Step 5: Solve for x
    x = 4,374,261,113.37/74,428.68
  6. Step 6: Final answer
    x = 58,771.18

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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.