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Finding the Fourth Proportional to 85,602.15, 128,393.51 and 33,007.23

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Solution

The fourth proportional to 85,602.15, 128,393.51 and 33,007.23 is: 49,507.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,602.15 : 128,393.51 = 33,007.23 : x
  2. Step 2: Convert to fraction form
    85,602.15/128,393.51 = 33,007.23/x
  3. Step 3: Cross multiply
    85,602.15x = 128,393.51 × 33,007.23
  4. Step 4: Simplify right side
    85,602.15x = 4,237,913,950.04
  5. Step 5: Solve for x
    x = 4,237,913,950.04/85,602.15
  6. Step 6: Final answer
    x = 49,507.10

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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.