Home / 85,571,969.40-128,325,783.33-30,971,064.96

Finding the Fourth Proportional to 85,571,969.40, 128,325,783.33 and 30,971,064.96

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Solution

The fourth proportional to 85,571,969.40, 128,325,783.33 and 30,971,064.96 is: 46,444,953.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,571,969.40 : 128,325,783.33 = 30,971,064.96 : x
  2. Step 2: Convert to fraction form
    85,571,969.40/128,325,783.33 = 30,971,064.96/x
  3. Step 3: Cross multiply
    85,571,969.40x = 128,325,783.33 × 30,971,064.96
  4. Step 4: Simplify right side
    85,571,969.40x = 3,974,386,171,556,315
  5. Step 5: Solve for x
    x = 3,974,386,171,556,315/85,571,969.40
  6. Step 6: Final answer
    x = 46,444,953.87

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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.