Home / 81,870,486.59-122,432,724.67-61,135,485.59

Finding the Fourth Proportional to 81,870,486.59, 122,432,724.67 and 61,135,485.59

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Solution

The fourth proportional to 81,870,486.59, 122,432,724.67 and 61,135,485.59 is: 91,424,692.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,870,486.59 : 122,432,724.67 = 61,135,485.59 : x
  2. Step 2: Convert to fraction form
    81,870,486.59/122,432,724.67 = 61,135,485.59/x
  3. Step 3: Cross multiply
    81,870,486.59x = 122,432,724.67 × 61,135,485.59
  4. Step 4: Simplify right side
    81,870,486.59x = 7,484,984,075,247,663
  5. Step 5: Solve for x
    x = 7,484,984,075,247,663/81,870,486.59
  6. Step 6: Final answer
    x = 91,424,692.68

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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.