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Finding the Fourth Proportional to 65,010.31, 89,720.59 and 39,514.44

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Solution

The fourth proportional to 65,010.31, 89,720.59 and 39,514.44 is: 54,533.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,010.31 : 89,720.59 = 39,514.44 : x
  2. Step 2: Convert to fraction form
    65,010.31/89,720.59 = 39,514.44/x
  3. Step 3: Cross multiply
    65,010.31x = 89,720.59 × 39,514.44
  4. Step 4: Simplify right side
    65,010.31x = 3,545,258,870.32
  5. Step 5: Solve for x
    x = 3,545,258,870.32/65,010.31
  6. Step 6: Final answer
    x = 54,533.79

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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.