Home / 70,252.47-105,388.43-28,689.75

Finding the Fourth Proportional to 70,252.47, 105,388.43 and 28,689.75

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Solution

The fourth proportional to 70,252.47, 105,388.43 and 28,689.75 is: 43,038.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,252.47 : 105,388.43 = 28,689.75 : x
  2. Step 2: Convert to fraction form
    70,252.47/105,388.43 = 28,689.75/x
  3. Step 3: Cross multiply
    70,252.47x = 105,388.43 × 28,689.75
  4. Step 4: Simplify right side
    70,252.47x = 3,023,567,566.14
  5. Step 5: Solve for x
    x = 3,023,567,566.14/70,252.47
  6. Step 6: Final answer
    x = 43,038.59

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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.