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Finding the Fourth Proportional to 74,053.89, 102,192.56 and 42,220.89

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Solution

The fourth proportional to 74,053.89, 102,192.56 and 42,220.89 is: 58,263.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,053.89 : 102,192.56 = 42,220.89 : x
  2. Step 2: Convert to fraction form
    74,053.89/102,192.56 = 42,220.89/x
  3. Step 3: Cross multiply
    74,053.89x = 102,192.56 × 42,220.89
  4. Step 4: Simplify right side
    74,053.89x = 4,314,660,623.47
  5. Step 5: Solve for x
    x = 4,314,660,623.47/74,053.89
  6. Step 6: Final answer
    x = 58,263.79

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1.5x scale

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.