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Finding the Fourth Proportional to 102,620.66, 153,920.16 and 48,572.40

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Solution

The fourth proportional to 102,620.66, 153,920.16 and 48,572.40 is: 72,853.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,620.66 : 153,920.16 = 48,572.40 : x
  2. Step 2: Convert to fraction form
    102,620.66/153,920.16 = 48,572.40/x
  3. Step 3: Cross multiply
    102,620.66x = 153,920.16 × 48,572.40
  4. Step 4: Simplify right side
    102,620.66x = 7,476,271,579.58
  5. Step 5: Solve for x
    x = 7,476,271,579.58/102,620.66
  6. Step 6: Final answer
    x = 72,853.47

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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.