Home / 80,871,939.33-121,307,901.28-19,461,105.42

Finding the Fourth Proportional to 80,871,939.33, 121,307,901.28 and 19,461,105.42

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Solution

The fourth proportional to 80,871,939.33, 121,307,901.28 and 19,461,105.42 is: 29,191,656.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,871,939.33 : 121,307,901.28 = 19,461,105.42 : x
  2. Step 2: Convert to fraction form
    80,871,939.33/121,307,901.28 = 19,461,105.42/x
  3. Step 3: Cross multiply
    80,871,939.33x = 121,307,901.28 × 19,461,105.42
  4. Step 4: Simplify right side
    80,871,939.33x = 2,360,785,855,089,033
  5. Step 5: Solve for x
    x = 2,360,785,855,089,033/80,871,939.33
  6. Step 6: Final answer
    x = 29,191,656.27

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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.