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Finding the Fourth Proportional to 71,440.28, 98,668.28 and 48,740.28

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Solution

The fourth proportional to 71,440.28, 98,668.28 and 48,740.28 is: 67,316.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,440.28 : 98,668.28 = 48,740.28 : x
  2. Step 2: Convert to fraction form
    71,440.28/98,668.28 = 48,740.28/x
  3. Step 3: Cross multiply
    71,440.28x = 98,668.28 × 48,740.28
  4. Step 4: Simplify right side
    71,440.28x = 4,809,119,594.32
  5. Step 5: Solve for x
    x = 4,809,119,594.32/71,440.28
  6. Step 6: Final answer
    x = 67,316.64

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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.