Home / 86,973,075-120,019,784.13-47,814,567.84

Finding the Fourth Proportional to 86,973,075, 120,019,784.13 and 47,814,567.84

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Solution

The fourth proportional to 86,973,075, 120,019,784.13 and 47,814,567.84 is: 65,982,421.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,973,075 : 120,019,784.13 = 47,814,567.84 : x
  2. Step 2: Convert to fraction form
    86,973,075/120,019,784.13 = 47,814,567.84/x
  3. Step 3: Cross multiply
    86,973,075x = 120,019,784.13 × 47,814,567.84
  4. Step 4: Simplify right side
    86,973,075x = 5,738,694,110,426,041
  5. Step 5: Solve for x
    x = 5,738,694,110,426,041/86,973,075
  6. Step 6: Final answer
    x = 65,982,421.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.