Home / 78,320,108.19-108,075,412.80-45,282,477

Finding the Fourth Proportional to 78,320,108.19, 108,075,412.80 and 45,282,477

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Solution

The fourth proportional to 78,320,108.19, 108,075,412.80 and 45,282,477 is: 62,486,154.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,320,108.19 : 108,075,412.80 = 45,282,477 : x
  2. Step 2: Convert to fraction form
    78,320,108.19/108,075,412.80 = 45,282,477/x
  3. Step 3: Cross multiply
    78,320,108.19x = 108,075,412.80 × 45,282,477
  4. Step 4: Simplify right side
    78,320,108.19x = 4,893,922,394,381,505
  5. Step 5: Solve for x
    x = 4,893,922,394,381,505/78,320,108.19
  6. Step 6: Final answer
    x = 62,486,154.67

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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.