Home / 85,440.22-128,172.57-26,280.84

Finding the Fourth Proportional to 85,440.22, 128,172.57 and 26,280.84

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Solution

The fourth proportional to 85,440.22, 128,172.57 and 26,280.84 is: 39,425.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,440.22 : 128,172.57 = 26,280.84 : x
  2. Step 2: Convert to fraction form
    85,440.22/128,172.57 = 26,280.84/x
  3. Step 3: Cross multiply
    85,440.22x = 128,172.57 × 26,280.84
  4. Step 4: Simplify right side
    85,440.22x = 3,368,482,804.56
  5. Step 5: Solve for x
    x = 3,368,482,804.56/85,440.22
  6. Step 6: Final answer
    x = 39,425.02

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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.