Home / 85,474.68-128,224.08-26,315.16

Finding the Fourth Proportional to 85,474.68, 128,224.08 and 26,315.16

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Solution

The fourth proportional to 85,474.68, 128,224.08 and 26,315.16 is: 39,476.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,474.68 : 128,224.08 = 26,315.16 : x
  2. Step 2: Convert to fraction form
    85,474.68/128,224.08 = 26,315.16/x
  3. Step 3: Cross multiply
    85,474.68x = 128,224.08 × 26,315.16
  4. Step 4: Simplify right side
    85,474.68x = 3,374,237,181.05
  5. Step 5: Solve for x
    x = 3,374,237,181.05/85,474.68
  6. Step 6: Final answer
    x = 39,476.45

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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.