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Finding the Fourth Proportional to 98,305.60, 147,429.60 and 45,702.40

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Solution

The fourth proportional to 98,305.60, 147,429.60 and 45,702.40 is: 68,540.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,305.60 : 147,429.60 = 45,702.40 : x
  2. Step 2: Convert to fraction form
    98,305.60/147,429.60 = 45,702.40/x
  3. Step 3: Cross multiply
    98,305.60x = 147,429.60 × 45,702.40
  4. Step 4: Simplify right side
    98,305.60x = 6,737,886,551.04
  5. Step 5: Solve for x
    x = 6,737,886,551.04/98,305.60
  6. Step 6: Final answer
    x = 68,540.21

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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.