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Finding the Fourth Proportional to 85,603.02, 128,334.96 and 35,720.31

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Solution

The fourth proportional to 85,603.02, 128,334.96 and 35,720.31 is: 53,551.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,603.02 : 128,334.96 = 35,720.31 : x
  2. Step 2: Convert to fraction form
    85,603.02/128,334.96 = 35,720.31/x
  3. Step 3: Cross multiply
    85,603.02x = 128,334.96 × 35,720.31
  4. Step 4: Simplify right side
    85,603.02x = 4,584,164,555.04
  5. Step 5: Solve for x
    x = 4,584,164,555.04/85,603.02
  6. Step 6: Final answer
    x = 53,551.43

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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.