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Finding the Fourth Proportional to 70,069.68, 96,698.30 and 39,859.38

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Solution

The fourth proportional to 70,069.68, 96,698.30 and 39,859.38 is: 55,007.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,069.68 : 96,698.30 = 39,859.38 : x
  2. Step 2: Convert to fraction form
    70,069.68/96,698.30 = 39,859.38/x
  3. Step 3: Cross multiply
    70,069.68x = 96,698.30 × 39,859.38
  4. Step 4: Simplify right side
    70,069.68x = 3,854,334,085.76
  5. Step 5: Solve for x
    x = 3,854,334,085.76/70,069.68
  6. Step 6: Final answer
    x = 55,007.16

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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.