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Finding the Fourth Proportional to 85,895.94, 128,842.32 and 35,284.23

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Solution

The fourth proportional to 85,895.94, 128,842.32 and 35,284.23 is: 52,925.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,895.94 : 128,842.32 = 35,284.23 : x
  2. Step 2: Convert to fraction form
    85,895.94/128,842.32 = 35,284.23/x
  3. Step 3: Cross multiply
    85,895.94x = 128,842.32 × 35,284.23
  4. Step 4: Simplify right side
    85,895.94x = 4,546,102,052.61
  5. Step 5: Solve for x
    x = 4,546,102,052.61/85,895.94
  6. Step 6: Final answer
    x = 52,925.69

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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.