Home / 30,600,887.81-45,901,282.50-20,987,120.12

Finding the Fourth Proportional to 30,600,887.81, 45,901,282.50 and 20,987,120.12

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Solution

The fourth proportional to 30,600,887.81, 45,901,282.50 and 20,987,120.12 is: 31,480,646.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,600,887.81 : 45,901,282.50 = 20,987,120.12 : x
  2. Step 2: Convert to fraction form
    30,600,887.81/45,901,282.50 = 20,987,120.12/x
  3. Step 3: Cross multiply
    30,600,887.81x = 45,901,282.50 × 20,987,120.12
  4. Step 4: Simplify right side
    30,600,887.81x = 963,335,729,260,047.38
  5. Step 5: Solve for x
    x = 963,335,729,260,047.38/30,600,887.81
  6. Step 6: Final answer
    x = 31,480,646.42

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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.