Home / 51,440.31-70,987.27-28,779.21

Finding the Fourth Proportional to 51,440.31, 70,987.27 and 28,779.21

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Solution

The fourth proportional to 51,440.31, 70,987.27 and 28,779.21 is: 39,715.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,440.31 : 70,987.27 = 28,779.21 : x
  2. Step 2: Convert to fraction form
    51,440.31/70,987.27 = 28,779.21/x
  3. Step 3: Cross multiply
    51,440.31x = 70,987.27 × 28,779.21
  4. Step 4: Simplify right side
    51,440.31x = 2,042,957,550.66
  5. Step 5: Solve for x
    x = 2,042,957,550.66/51,440.31
  6. Step 6: Final answer
    x = 39,715.11

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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.