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Finding the Fourth Proportional to 77,885.20, 116,827.80 and 48,336.40

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Solution

The fourth proportional to 77,885.20, 116,827.80 and 48,336.40 is: 72,504.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,885.20 : 116,827.80 = 48,336.40 : x
  2. Step 2: Convert to fraction form
    77,885.20/116,827.80 = 48,336.40/x
  3. Step 3: Cross multiply
    77,885.20x = 116,827.80 × 48,336.40
  4. Step 4: Simplify right side
    77,885.20x = 5,647,035,271.92
  5. Step 5: Solve for x
    x = 5,647,035,271.92/77,885.20
  6. Step 6: Final answer
    x = 72,504.60

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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.