Home / 74,172.78-102,357.90-42,341.60

Finding the Fourth Proportional to 74,172.78, 102,357.90 and 42,341.60

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Solution

The fourth proportional to 74,172.78, 102,357.90 and 42,341.60 is: 58,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,172.78 : 102,357.90 = 42,341.60 : x
  2. Step 2: Convert to fraction form
    74,172.78/102,357.90 = 42,341.60/x
  3. Step 3: Cross multiply
    74,172.78x = 102,357.90 × 42,341.60
  4. Step 4: Simplify right side
    74,172.78x = 4,333,997,514.53
  5. Step 5: Solve for x
    x = 4,333,997,514.53/74,172.78
  6. Step 6: Final answer
    x = 58,431.11

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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.