Home / 86,289,401.20-129,434,101.80-40,939,769.20

Finding the Fourth Proportional to 86,289,401.20, 129,434,101.80 and 40,939,769.20

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Solution

The fourth proportional to 86,289,401.20, 129,434,101.80 and 40,939,769.20 is: 61,409,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,289,401.20 : 129,434,101.80 = 40,939,769.20 : x
  2. Step 2: Convert to fraction form
    86,289,401.20/129,434,101.80 = 40,939,769.20/x
  3. Step 3: Cross multiply
    86,289,401.20x = 129,434,101.80 × 40,939,769.20
  4. Step 4: Simplify right side
    86,289,401.20x = 5,299,002,254,301,305
  5. Step 5: Solve for x
    x = 5,299,002,254,301,305/86,289,401.20
  6. Step 6: Final answer
    x = 61,409,653.80

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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.