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Finding the Fourth Proportional to 85,598.40, 128,387.88 and 33,003.48

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Solution

The fourth proportional to 85,598.40, 128,387.88 and 33,003.48 is: 49,501.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,598.40 : 128,387.88 = 33,003.48 : x
  2. Step 2: Convert to fraction form
    85,598.40/128,387.88 = 33,003.48/x
  3. Step 3: Cross multiply
    85,598.40x = 128,387.88 × 33,003.48
  4. Step 4: Simplify right side
    85,598.40x = 4,237,246,829.82
  5. Step 5: Solve for x
    x = 4,237,246,829.82/85,598.40
  6. Step 6: Final answer
    x = 49,501.47

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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.