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Finding the Fourth Proportional to 85,735.33, 128,603.01 and 35,788.18

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Solution

The fourth proportional to 85,735.33, 128,603.01 and 35,788.18 is: 53,682.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,735.33 : 128,603.01 = 35,788.18 : x
  2. Step 2: Convert to fraction form
    85,735.33/128,603.01 = 35,788.18/x
  3. Step 3: Cross multiply
    85,735.33x = 128,603.01 × 35,788.18
  4. Step 4: Simplify right side
    85,735.33x = 4,602,467,670.42
  5. Step 5: Solve for x
    x = 4,602,467,670.42/85,735.33
  6. Step 6: Final answer
    x = 53,682.28

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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.