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Finding the Fourth Proportional to 47,991.60, 71,987.40 and 46,047.60

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Solution

The fourth proportional to 47,991.60, 71,987.40 and 46,047.60 is: 69,071.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,991.60 : 71,987.40 = 46,047.60 : x
  2. Step 2: Convert to fraction form
    47,991.60/71,987.40 = 46,047.60/x
  3. Step 3: Cross multiply
    47,991.60x = 71,987.40 × 46,047.60
  4. Step 4: Simplify right side
    47,991.60x = 3,314,847,000.24
  5. Step 5: Solve for x
    x = 3,314,847,000.24/47,991.60
  6. Step 6: Final answer
    x = 69,071.40

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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.