Home / 40,090,779.68-55,325,311.50-21,756,065.12

Finding the Fourth Proportional to 40,090,779.68, 55,325,311.50 and 21,756,065.12

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Solution

The fourth proportional to 40,090,779.68, 55,325,311.50 and 21,756,065.12 is: 30,023,389.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,090,779.68 : 55,325,311.50 = 21,756,065.12 : x
  2. Step 2: Convert to fraction form
    40,090,779.68/55,325,311.50 = 21,756,065.12/x
  3. Step 3: Cross multiply
    40,090,779.68x = 55,325,311.50 × 21,756,065.12
  4. Step 4: Simplify right side
    40,090,779.68x = 1,203,661,079,778,285
  5. Step 5: Solve for x
    x = 1,203,661,079,778,285/40,090,779.68
  6. Step 6: Final answer
    x = 30,023,389.15

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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.