Home / 81,581.50-112,582.74-47,613.34

Finding the Fourth Proportional to 81,581.50, 112,582.74 and 47,613.34

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Solution

The fourth proportional to 81,581.50, 112,582.74 and 47,613.34 is: 65,706.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,581.50 : 112,582.74 = 47,613.34 : x
  2. Step 2: Convert to fraction form
    81,581.50/112,582.74 = 47,613.34/x
  3. Step 3: Cross multiply
    81,581.50x = 112,582.74 × 47,613.34
  4. Step 4: Simplify right side
    81,581.50x = 5,360,440,277.75
  5. Step 5: Solve for x
    x = 5,360,440,277.75/81,581.50
  6. Step 6: Final answer
    x = 65,706.57

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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.