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Finding the Fourth Proportional to 85,457.64, 128,084.94 and 35,527.08

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Solution

The fourth proportional to 85,457.64, 128,084.94 and 35,527.08 is: 53,248.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,457.64 : 128,084.94 = 35,527.08 : x
  2. Step 2: Convert to fraction form
    85,457.64/128,084.94 = 35,527.08/x
  3. Step 3: Cross multiply
    85,457.64x = 128,084.94 × 35,527.08
  4. Step 4: Simplify right side
    85,457.64x = 4,550,483,910.18
  5. Step 5: Solve for x
    x = 4,550,483,910.18/85,457.64
  6. Step 6: Final answer
    x = 53,248.42

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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.