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Finding the Fourth Proportional to 71,533.73, 98,699.01 and 42,858.06

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Solution

The fourth proportional to 71,533.73, 98,699.01 and 42,858.06 is: 59,133.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,533.73 : 98,699.01 = 42,858.06 : x
  2. Step 2: Convert to fraction form
    71,533.73/98,699.01 = 42,858.06/x
  3. Step 3: Cross multiply
    71,533.73x = 98,699.01 × 42,858.06
  4. Step 4: Simplify right side
    71,533.73x = 4,230,048,116.86
  5. Step 5: Solve for x
    x = 4,230,048,116.86/71,533.73
  6. Step 6: Final answer
    x = 59,133.61

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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.