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Finding the Fourth Proportional to 98,244.75, 147,243.81 and 42,018.72

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Solution

The fourth proportional to 98,244.75, 147,243.81 and 42,018.72 is: 62,975.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,244.75 : 147,243.81 = 42,018.72 : x
  2. Step 2: Convert to fraction form
    98,244.75/147,243.81 = 42,018.72/x
  3. Step 3: Cross multiply
    98,244.75x = 147,243.81 × 42,018.72
  4. Step 4: Simplify right side
    98,244.75x = 6,186,996,424.12
  5. Step 5: Solve for x
    x = 6,186,996,424.12/98,244.75
  6. Step 6: Final answer
    x = 62,975.34

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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.