Home / 90,907,888.63-136,361,834.75-21,820,692.18

Finding the Fourth Proportional to 90,907,888.63, 136,361,834.75 and 21,820,692.18

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Solution

The fourth proportional to 90,907,888.63, 136,361,834.75 and 21,820,692.18 is: 32,731,038.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,907,888.63 : 136,361,834.75 = 21,820,692.18 : x
  2. Step 2: Convert to fraction form
    90,907,888.63/136,361,834.75 = 21,820,692.18/x
  3. Step 3: Cross multiply
    90,907,888.63x = 136,361,834.75 × 21,820,692.18
  4. Step 4: Simplify right side
    90,907,888.63x = 2,975,509,621,715,429
  5. Step 5: Solve for x
    x = 2,975,509,621,715,429/90,907,888.63
  6. Step 6: Final answer
    x = 32,731,038.71

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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.