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Finding the Fourth Proportional to 74,735.77, 103,077.05 and 47,880.78

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Solution

The fourth proportional to 74,735.77, 103,077.05 and 47,880.78 is: 66,038.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,735.77 : 103,077.05 = 47,880.78 : x
  2. Step 2: Convert to fraction form
    74,735.77/103,077.05 = 47,880.78/x
  3. Step 3: Cross multiply
    74,735.77x = 103,077.05 × 47,880.78
  4. Step 4: Simplify right side
    74,735.77x = 4,935,409,314.70
  5. Step 5: Solve for x
    x = 4,935,409,314.70/74,735.77
  6. Step 6: Final answer
    x = 66,038.11

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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.