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Finding the Fourth Proportional to 70,284.88, 96,998.40 and 40,070.92

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Solution

The fourth proportional to 70,284.88, 96,998.40 and 40,070.92 is: 55,300.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,284.88 : 96,998.40 = 40,070.92 : x
  2. Step 2: Convert to fraction form
    70,284.88/96,998.40 = 40,070.92/x
  3. Step 3: Cross multiply
    70,284.88x = 96,998.40 × 40,070.92
  4. Step 4: Simplify right side
    70,284.88x = 3,886,815,126.53
  5. Step 5: Solve for x
    x = 3,886,815,126.53/70,284.88
  6. Step 6: Final answer
    x = 55,300.87

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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.