Home / 86,289,322.70-129,433,984.05-40,939,690.70

Finding the Fourth Proportional to 86,289,322.70, 129,433,984.05 and 40,939,690.70

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Solution

The fourth proportional to 86,289,322.70, 129,433,984.05 and 40,939,690.70 is: 61,409,536.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,289,322.70 : 129,433,984.05 = 40,939,690.70 : x
  2. Step 2: Convert to fraction form
    86,289,322.70/129,433,984.05 = 40,939,690.70/x
  3. Step 3: Cross multiply
    86,289,322.70x = 129,433,984.05 × 40,939,690.70
  4. Step 4: Simplify right side
    86,289,322.70x = 5,298,987,273,075,734
  5. Step 5: Solve for x
    x = 5,298,987,273,075,734/86,289,322.70
  6. Step 6: Final answer
    x = 61,409,536.05

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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.