Home / 81,581.67-112,582.65-47,613.51

Finding the Fourth Proportional to 81,581.67, 112,582.65 and 47,613.51

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Solution

The fourth proportional to 81,581.67, 112,582.65 and 47,613.51 is: 65,706.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,581.67 : 112,582.65 = 47,613.51 : x
  2. Step 2: Convert to fraction form
    81,581.67/112,582.65 = 47,613.51/x
  3. Step 3: Cross multiply
    81,581.67x = 112,582.65 × 47,613.51
  4. Step 4: Simplify right side
    81,581.67x = 5,360,455,131.60
  5. Step 5: Solve for x
    x = 5,360,455,131.60/81,581.67
  6. Step 6: Final answer
    x = 65,706.61

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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.