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Finding the Fourth Proportional to 62,980.41, 86,919.11 and 47,037.18

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Solution

The fourth proportional to 62,980.41, 86,919.11 and 47,037.18 is: 64,915.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,980.41 : 86,919.11 = 47,037.18 : x
  2. Step 2: Convert to fraction form
    62,980.41/86,919.11 = 47,037.18/x
  3. Step 3: Cross multiply
    62,980.41x = 86,919.11 × 47,037.18
  4. Step 4: Simplify right side
    62,980.41x = 4,088,430,089.66
  5. Step 5: Solve for x
    x = 4,088,430,089.66/62,980.41
  6. Step 6: Final answer
    x = 64,915.90

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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.