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Finding the Fourth Proportional to 65,324.88, 90,137.51 and 38,457.59

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Solution

The fourth proportional to 65,324.88, 90,137.51 and 38,457.59 is: 53,065.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,324.88 : 90,137.51 = 38,457.59 : x
  2. Step 2: Convert to fraction form
    65,324.88/90,137.51 = 38,457.59/x
  3. Step 3: Cross multiply
    65,324.88x = 90,137.51 × 38,457.59
  4. Step 4: Simplify right side
    65,324.88x = 3,466,470,904.44
  5. Step 5: Solve for x
    x = 3,466,470,904.44/65,324.88
  6. Step 6: Final answer
    x = 53,065.09

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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.