Home / 86,971,942.48-120,021,357.84-47,814,385.45

Finding the Fourth Proportional to 86,971,942.48, 120,021,357.84 and 47,814,385.45

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Solution

The fourth proportional to 86,971,942.48, 120,021,357.84 and 47,814,385.45 is: 65,983,894.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,971,942.48 : 120,021,357.84 = 47,814,385.45 : x
  2. Step 2: Convert to fraction form
    86,971,942.48/120,021,357.84 = 47,814,385.45/x
  3. Step 3: Cross multiply
    86,971,942.48x = 120,021,357.84 × 47,814,385.45
  4. Step 4: Simplify right side
    86,971,942.48x = 5,738,747,465,994,140
  5. Step 5: Solve for x
    x = 5,738,747,465,994,140/86,971,942.48
  6. Step 6: Final answer
    x = 65,983,894.37

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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.