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Finding the Fourth Proportional to 47,223.60, 70,835.40 and 40,808.40

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Solution

The fourth proportional to 47,223.60, 70,835.40 and 40,808.40 is: 61,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,223.60 : 70,835.40 = 40,808.40 : x
  2. Step 2: Convert to fraction form
    47,223.60/70,835.40 = 40,808.40/x
  3. Step 3: Cross multiply
    47,223.60x = 70,835.40 × 40,808.40
  4. Step 4: Simplify right side
    47,223.60x = 2,890,679,337.36
  5. Step 5: Solve for x
    x = 2,890,679,337.36/47,223.60
  6. Step 6: Final answer
    x = 61,212.60

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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.