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Finding the Fourth Proportional to 71,389.44, 98,555.63 and 45,573.95

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Solution

The fourth proportional to 71,389.44, 98,555.63 and 45,573.95 is: 62,916.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,389.44 : 98,555.63 = 45,573.95 : x
  2. Step 2: Convert to fraction form
    71,389.44/98,555.63 = 45,573.95/x
  3. Step 3: Cross multiply
    71,389.44x = 98,555.63 × 45,573.95
  4. Step 4: Simplify right side
    71,389.44x = 4,491,569,372.36
  5. Step 5: Solve for x
    x = 4,491,569,372.36/71,389.44
  6. Step 6: Final answer
    x = 62,916.44

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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.