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Finding the Fourth Proportional to 85,598.90, 128,388.63 and 33,003.98

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Solution

The fourth proportional to 85,598.90, 128,388.63 and 33,003.98 is: 49,502.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,598.90 : 128,388.63 = 33,003.98 : x
  2. Step 2: Convert to fraction form
    85,598.90/128,388.63 = 33,003.98/x
  3. Step 3: Cross multiply
    85,598.90x = 128,388.63 × 33,003.98
  4. Step 4: Simplify right side
    85,598.90x = 4,237,335,776.75
  5. Step 5: Solve for x
    x = 4,237,335,776.75/85,598.90
  6. Step 6: Final answer
    x = 49,502.22

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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.