Home / 70,070.40-105,094.26-20,139.09

Finding the Fourth Proportional to 70,070.40, 105,094.26 and 20,139.09

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Solution

The fourth proportional to 70,070.40, 105,094.26 and 20,139.09 is: 30,205.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,070.40 : 105,094.26 = 20,139.09 : x
  2. Step 2: Convert to fraction form
    70,070.40/105,094.26 = 20,139.09/x
  3. Step 3: Cross multiply
    70,070.40x = 105,094.26 × 20,139.09
  4. Step 4: Simplify right side
    70,070.40x = 2,116,502,760.62
  5. Step 5: Solve for x
    x = 2,116,502,760.62/70,070.40
  6. Step 6: Final answer
    x = 30,205.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.