Home / 51,441.78-70,985.62-28,779.00

Finding the Fourth Proportional to 51,441.78, 70,985.62 and 28,779.00

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Solution

The fourth proportional to 51,441.78, 70,985.62 and 28,779.00 is: 39,712.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,441.78 : 70,985.62 = 28,779.00 : x
  2. Step 2: Convert to fraction form
    51,441.78/70,985.62 = 28,779.00/x
  3. Step 3: Cross multiply
    51,441.78x = 70,985.62 × 28,779.00
  4. Step 4: Simplify right side
    51,441.78x = 2,042,894,765.88
  5. Step 5: Solve for x
    x = 2,042,894,765.88/51,441.78
  6. Step 6: Final answer
    x = 39,712.75

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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.