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Finding the Fourth Proportional to 69,531.60, 104,220.60 and 38,389.20

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Solution

The fourth proportional to 69,531.60, 104,220.60 and 38,389.20 is: 57,541.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,531.60 : 104,220.60 = 38,389.20 : x
  2. Step 2: Convert to fraction form
    69,531.60/104,220.60 = 38,389.20/x
  3. Step 3: Cross multiply
    69,531.60x = 104,220.60 × 38,389.20
  4. Step 4: Simplify right side
    69,531.60x = 4,000,945,457.52
  5. Step 5: Solve for x
    x = 4,000,945,457.52/69,531.60
  6. Step 6: Final answer
    x = 57,541.40

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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.