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Finding the Fourth Proportional to 74,663.40, 112,020.70 and 33,140.20

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Solution

The fourth proportional to 74,663.40, 112,020.70 and 33,140.20 is: 49,721.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,663.40 : 112,020.70 = 33,140.20 : x
  2. Step 2: Convert to fraction form
    74,663.40/112,020.70 = 33,140.20/x
  3. Step 3: Cross multiply
    74,663.40x = 112,020.70 × 33,140.20
  4. Step 4: Simplify right side
    74,663.40x = 3,712,388,402.14
  5. Step 5: Solve for x
    x = 3,712,388,402.14/74,663.40
  6. Step 6: Final answer
    x = 49,721.66

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1.5x scale

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.