Home / 81,483.90-112,445.78-45,185.15

Finding the Fourth Proportional to 81,483.90, 112,445.78 and 45,185.15

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Solution

The fourth proportional to 81,483.90, 112,445.78 and 45,185.15 is: 62,354.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,483.90 : 112,445.78 = 45,185.15 : x
  2. Step 2: Convert to fraction form
    81,483.90/112,445.78 = 45,185.15/x
  3. Step 3: Cross multiply
    81,483.90x = 112,445.78 × 45,185.15
  4. Step 4: Simplify right side
    81,483.90x = 5,080,878,648.01
  5. Step 5: Solve for x
    x = 5,080,878,648.01/81,483.90
  6. Step 6: Final answer
    x = 62,354.39

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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.