Home / 86,313,638.40-129,453,868.80-25,731,340.80

Finding the Fourth Proportional to 86,313,638.40, 129,453,868.80 and 25,731,340.80

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Solution

The fourth proportional to 86,313,638.40, 129,453,868.80 and 25,731,340.80 is: 38,592,065.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,313,638.40 : 129,453,868.80 = 25,731,340.80 : x
  2. Step 2: Convert to fraction form
    86,313,638.40/129,453,868.80 = 25,731,340.80/x
  3. Step 3: Cross multiply
    86,313,638.40x = 129,453,868.80 × 25,731,340.80
  4. Step 4: Simplify right side
    86,313,638.40x = 3,331,021,615,971,287
  5. Step 5: Solve for x
    x = 3,331,021,615,971,287/86,313,638.40
  6. Step 6: Final answer
    x = 38,592,065.84

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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.