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Finding the Fourth Proportional to 98,010, 147,015 and 42,606

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Solution

The fourth proportional to 98,010, 147,015 and 42,606 is: 63,909

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,010 : 147,015 = 42,606 : x
  2. Step 2: Convert to fraction form
    98,010/147,015 = 42,606/x
  3. Step 3: Cross multiply
    98,010x = 147,015 × 42,606
  4. Step 4: Simplify right side
    98,010x = 6,263,721,090
  5. Step 5: Solve for x
    x = 6,263,721,090/98,010
  6. Step 6: Final answer
    x = 63,909

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.