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Finding the Fourth Proportional to 85,482.28, 128,223.44 and 23,152.80

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Solution

The fourth proportional to 85,482.28, 128,223.44 and 23,152.80 is: 34,729.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,482.28 : 128,223.44 = 23,152.80 : x
  2. Step 2: Convert to fraction form
    85,482.28/128,223.44 = 23,152.80/x
  3. Step 3: Cross multiply
    85,482.28x = 128,223.44 × 23,152.80
  4. Step 4: Simplify right side
    85,482.28x = 2,968,731,661.63
  5. Step 5: Solve for x
    x = 2,968,731,661.63/85,482.28
  6. Step 6: Final answer
    x = 34,729.21

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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.