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Finding the Fourth Proportional to 70,509.90, 105,717.54 and 27,776.26

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Solution

The fourth proportional to 70,509.90, 105,717.54 and 27,776.26 is: 41,645.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,509.90 : 105,717.54 = 27,776.26 : x
  2. Step 2: Convert to fraction form
    70,509.90/105,717.54 = 27,776.26/x
  3. Step 3: Cross multiply
    70,509.90x = 105,717.54 × 27,776.26
  4. Step 4: Simplify right side
    70,509.90x = 2,936,437,877.60
  5. Step 5: Solve for x
    x = 2,936,437,877.60/70,509.90
  6. Step 6: Final answer
    x = 41,645.75

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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.