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Finding the Fourth Proportional to 47,260.75, 70,890.88 and 13,980.99

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Solution

The fourth proportional to 47,260.75, 70,890.88 and 13,980.99 is: 20,971.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,260.75 : 70,890.88 = 13,980.99 : x
  2. Step 2: Convert to fraction form
    47,260.75/70,890.88 = 13,980.99/x
  3. Step 3: Cross multiply
    47,260.75x = 70,890.88 × 13,980.99
  4. Step 4: Simplify right side
    47,260.75x = 991,124,684.37
  5. Step 5: Solve for x
    x = 991,124,684.37/47,260.75
  6. Step 6: Final answer
    x = 20,971.41

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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.