Home / 85,418.19-128,038.13-29,241.75

Finding the Fourth Proportional to 85,418.19, 128,038.13 and 29,241.75

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Solution

The fourth proportional to 85,418.19, 128,038.13 and 29,241.75 is: 43,832.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,418.19 : 128,038.13 = 29,241.75 : x
  2. Step 2: Convert to fraction form
    85,418.19/128,038.13 = 29,241.75/x
  3. Step 3: Cross multiply
    85,418.19x = 128,038.13 × 29,241.75
  4. Step 4: Simplify right side
    85,418.19x = 3,744,058,841.72
  5. Step 5: Solve for x
    x = 3,744,058,841.72/85,418.19
  6. Step 6: Final answer
    x = 43,832.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.