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Finding the Fourth Proportional to 65,312.52, 90,131.30 and 37,018.41

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Solution

The fourth proportional to 65,312.52, 90,131.30 and 37,018.41 is: 51,085.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,312.52 : 90,131.30 = 37,018.41 : x
  2. Step 2: Convert to fraction form
    65,312.52/90,131.30 = 37,018.41/x
  3. Step 3: Cross multiply
    65,312.52x = 90,131.30 × 37,018.41
  4. Step 4: Simplify right side
    65,312.52x = 3,336,517,417.23
  5. Step 5: Solve for x
    x = 3,336,517,417.23/65,312.52
  6. Step 6: Final answer
    x = 51,085.42

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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.