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Finding the Fourth Proportional to 74,973.48, 112,404.67 and 45,384.32

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Solution

The fourth proportional to 74,973.48, 112,404.67 and 45,384.32 is: 68,042.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,973.48 : 112,404.67 = 45,384.32 : x
  2. Step 2: Convert to fraction form
    74,973.48/112,404.67 = 45,384.32/x
  3. Step 3: Cross multiply
    74,973.48x = 112,404.67 × 45,384.32
  4. Step 4: Simplify right side
    74,973.48x = 5,101,409,512.77
  5. Step 5: Solve for x
    x = 5,101,409,512.77/74,973.48
  6. Step 6: Final answer
    x = 68,042.85

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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.