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Finding the Fourth Proportional to 85,642.77, 128,466.96 and 29,482.28

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Solution

The fourth proportional to 85,642.77, 128,466.96 and 29,482.28 is: 44,224.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,642.77 : 128,466.96 = 29,482.28 : x
  2. Step 2: Convert to fraction form
    85,642.77/128,466.96 = 29,482.28/x
  3. Step 3: Cross multiply
    85,642.77x = 128,466.96 × 29,482.28
  4. Step 4: Simplify right side
    85,642.77x = 3,787,498,780.16
  5. Step 5: Solve for x
    x = 3,787,498,780.16/85,642.77
  6. Step 6: Final answer
    x = 44,224.39

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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.