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Finding the Fourth Proportional to 47,410.60, 71,115.90 and 39,807.40

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Solution

The fourth proportional to 47,410.60, 71,115.90 and 39,807.40 is: 59,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,410.60 : 71,115.90 = 39,807.40 : x
  2. Step 2: Convert to fraction form
    47,410.60/71,115.90 = 39,807.40/x
  3. Step 3: Cross multiply
    47,410.60x = 71,115.90 × 39,807.40
  4. Step 4: Simplify right side
    47,410.60x = 2,830,939,077.66
  5. Step 5: Solve for x
    x = 2,830,939,077.66/47,410.60
  6. Step 6: Final answer
    x = 59,711.10

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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.