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Finding the Fourth Proportional to 76,165.60, 114,280.80 and 36,702.40

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Solution

The fourth proportional to 76,165.60, 114,280.80 and 36,702.40 is: 55,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,165.60 : 114,280.80 = 36,702.40 : x
  2. Step 2: Convert to fraction form
    76,165.60/114,280.80 = 36,702.40/x
  3. Step 3: Cross multiply
    76,165.60x = 114,280.80 × 36,702.40
  4. Step 4: Simplify right side
    76,165.60x = 4,194,379,633.92
  5. Step 5: Solve for x
    x = 4,194,379,633.92/76,165.60
  6. Step 6: Final answer
    x = 55,069.21

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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.