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Finding the Fourth Proportional to 70,199.58, 96,875.40 and 39,987.70

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Solution

The fourth proportional to 70,199.58, 96,875.40 and 39,987.70 is: 55,183.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,199.58 : 96,875.40 = 39,987.70 : x
  2. Step 2: Convert to fraction form
    70,199.58/96,875.40 = 39,987.70/x
  3. Step 3: Cross multiply
    70,199.58x = 96,875.40 × 39,987.70
  4. Step 4: Simplify right side
    70,199.58x = 3,873,824,432.58
  5. Step 5: Solve for x
    x = 3,873,824,432.58/70,199.58
  6. Step 6: Final answer
    x = 55,183.01

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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.