Home / 85,443.35-128,175.26-35,557.16

Finding the Fourth Proportional to 85,443.35, 128,175.26 and 35,557.16

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Solution

The fourth proportional to 85,443.35, 128,175.26 and 35,557.16 is: 53,339.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,443.35 : 128,175.26 = 35,557.16 : x
  2. Step 2: Convert to fraction form
    85,443.35/128,175.26 = 35,557.16/x
  3. Step 3: Cross multiply
    85,443.35x = 128,175.26 × 35,557.16
  4. Step 4: Simplify right side
    85,443.35x = 4,557,547,409.20
  5. Step 5: Solve for x
    x = 4,557,547,409.20/85,443.35
  6. Step 6: Final answer
    x = 53,339.99

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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.