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Finding the Fourth Proportional to 91,029.60, 136,544.40 and 28,706.40

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Solution

The fourth proportional to 91,029.60, 136,544.40 and 28,706.40 is: 43,059.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,029.60 : 136,544.40 = 28,706.40 : x
  2. Step 2: Convert to fraction form
    91,029.60/136,544.40 = 28,706.40/x
  3. Step 3: Cross multiply
    91,029.60x = 136,544.40 × 28,706.40
  4. Step 4: Simplify right side
    91,029.60x = 3,919,698,164.16
  5. Step 5: Solve for x
    x = 3,919,698,164.16/91,029.60
  6. Step 6: Final answer
    x = 43,059.60

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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.