Home / 81,581.04-112,582.44-45,771.48

Finding the Fourth Proportional to 81,581.04, 112,582.44 and 45,771.48

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Solution

The fourth proportional to 81,581.04, 112,582.44 and 45,771.48 is: 63,164.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,581.04 : 112,582.44 = 45,771.48 : x
  2. Step 2: Convert to fraction form
    81,581.04/112,582.44 = 45,771.48/x
  3. Step 3: Cross multiply
    81,581.04x = 112,582.44 × 45,771.48
  4. Step 4: Simplify right side
    81,581.04x = 5,153,064,900.81
  5. Step 5: Solve for x
    x = 5,153,064,900.81/81,581.04
  6. Step 6: Final answer
    x = 63,164.98

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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.