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Finding the Fourth Proportional to 47,259.79, 70,889.68 and 13,977.26

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Solution

The fourth proportional to 47,259.79, 70,889.68 and 13,977.26 is: 20,965.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,259.79 : 70,889.68 = 13,977.26 : x
  2. Step 2: Convert to fraction form
    47,259.79/70,889.68 = 13,977.26/x
  3. Step 3: Cross multiply
    47,259.79x = 70,889.68 × 13,977.26
  4. Step 4: Simplify right side
    47,259.79x = 990,843,700.84
  5. Step 5: Solve for x
    x = 990,843,700.84/47,259.79
  6. Step 6: Final answer
    x = 20,965.89

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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.