Home / 81,447.02-112,401.40-45,648.54

Finding the Fourth Proportional to 81,447.02, 112,401.40 and 45,648.54

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Solution

The fourth proportional to 81,447.02, 112,401.40 and 45,648.54 is: 62,997.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,447.02 : 112,401.40 = 45,648.54 : x
  2. Step 2: Convert to fraction form
    81,447.02/112,401.40 = 45,648.54/x
  3. Step 3: Cross multiply
    81,447.02x = 112,401.40 × 45,648.54
  4. Step 4: Simplify right side
    81,447.02x = 5,130,959,803.96
  5. Step 5: Solve for x
    x = 5,130,959,803.96/81,447.02
  6. Step 6: Final answer
    x = 62,997.51

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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.