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Finding the Fourth Proportional to 48,296.40, 72,457.40 and 17,128.40

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Solution

The fourth proportional to 48,296.40, 72,457.40 and 17,128.40 is: 25,697.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,296.40 : 72,457.40 = 17,128.40 : x
  2. Step 2: Convert to fraction form
    48,296.40/72,457.40 = 17,128.40/x
  3. Step 3: Cross multiply
    48,296.40x = 72,457.40 × 17,128.40
  4. Step 4: Simplify right side
    48,296.40x = 1,241,079,330.16
  5. Step 5: Solve for x
    x = 1,241,079,330.16/48,296.40
  6. Step 6: Final answer
    x = 25,697.14

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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.