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Finding the Fourth Proportional to 51,292.98, 70,779.69 and 28,629.99

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Solution

The fourth proportional to 51,292.98, 70,779.69 and 28,629.99 is: 39,506.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,292.98 : 70,779.69 = 28,629.99 : x
  2. Step 2: Convert to fraction form
    51,292.98/70,779.69 = 28,629.99/x
  3. Step 3: Cross multiply
    51,292.98x = 70,779.69 × 28,629.99
  4. Step 4: Simplify right side
    51,292.98x = 2,026,421,816.90
  5. Step 5: Solve for x
    x = 2,026,421,816.90/51,292.98
  6. Step 6: Final answer
    x = 39,506.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.