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Finding the Fourth Proportional to 90,886.40, 136,005.60 and 57,622.40

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Solution

The fourth proportional to 90,886.40, 136,005.60 and 57,622.40 is: 86,228.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,886.40 : 136,005.60 = 57,622.40 : x
  2. Step 2: Convert to fraction form
    90,886.40/136,005.60 = 57,622.40/x
  3. Step 3: Cross multiply
    90,886.40x = 136,005.60 × 57,622.40
  4. Step 4: Simplify right side
    90,886.40x = 7,836,969,085.44
  5. Step 5: Solve for x
    x = 7,836,969,085.44/90,886.40
  6. Step 6: Final answer
    x = 86,228.18

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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.