Home / 81,454.02-112,412.85-45,647.36

Finding the Fourth Proportional to 81,454.02, 112,412.85 and 45,647.36

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Solution

The fourth proportional to 81,454.02, 112,412.85 and 45,647.36 is: 62,996.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,454.02 : 112,412.85 = 45,647.36 : x
  2. Step 2: Convert to fraction form
    81,454.02/112,412.85 = 45,647.36/x
  3. Step 3: Cross multiply
    81,454.02x = 112,412.85 × 45,647.36
  4. Step 4: Simplify right side
    81,454.02x = 5,131,349,832.58
  5. Step 5: Solve for x
    x = 5,131,349,832.58/81,454.02
  6. Step 6: Final answer
    x = 62,996.89

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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.