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Finding the Fourth Proportional to 65,702.65, 90,669.75 and 37,408.36

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Solution

The fourth proportional to 65,702.65, 90,669.75 and 37,408.36 is: 51,623.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,702.65 : 90,669.75 = 37,408.36 : x
  2. Step 2: Convert to fraction form
    65,702.65/90,669.75 = 37,408.36/x
  3. Step 3: Cross multiply
    65,702.65x = 90,669.75 × 37,408.36
  4. Step 4: Simplify right side
    65,702.65x = 3,391,806,649.11
  5. Step 5: Solve for x
    x = 3,391,806,649.11/65,702.65
  6. Step 6: Final answer
    x = 51,623.59

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1.5x scale

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.