Home / 81,485.90-112,448.53-45,187.15

Finding the Fourth Proportional to 81,485.90, 112,448.53 and 45,187.15

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Solution

The fourth proportional to 81,485.90, 112,448.53 and 45,187.15 is: 62,357.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,485.90 : 112,448.53 = 45,187.15 : x
  2. Step 2: Convert to fraction form
    81,485.90/112,448.53 = 45,187.15/x
  3. Step 3: Cross multiply
    81,485.90x = 112,448.53 × 45,187.15
  4. Step 4: Simplify right side
    81,485.90x = 5,081,228,592.39
  5. Step 5: Solve for x
    x = 5,081,228,592.39/81,485.90
  6. Step 6: Final answer
    x = 62,357.15

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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.