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Finding the Fourth Proportional to 85,528.40, 128,292.60 and 22,348.40

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Solution

The fourth proportional to 85,528.40, 128,292.60 and 22,348.40 is: 33,522.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,528.40 : 128,292.60 = 22,348.40 : x
  2. Step 2: Convert to fraction form
    85,528.40/128,292.60 = 22,348.40/x
  3. Step 3: Cross multiply
    85,528.40x = 128,292.60 × 22,348.40
  4. Step 4: Simplify right side
    85,528.40x = 2,867,134,341.84
  5. Step 5: Solve for x
    x = 2,867,134,341.84/85,528.40
  6. Step 6: Final answer
    x = 33,522.60

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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.