Finding the Fourth Proportional to 81,483,991.20, 122,225,986.80 and 62,352,115.20
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Solution
The fourth proportional to 81,483,991.20, 122,225,986.80 and 62,352,115.20 is: 93,528,172.80
Step by Step Solution
- Step 1: Write the proportion equation
81,483,991.20 : 122,225,986.80 = 62,352,115.20 : x - Step 2: Convert to fraction form
81,483,991.20/122,225,986.80 = 62,352,115.20/x - Step 3: Cross multiply
81,483,991.20x = 122,225,986.80 × 62,352,115.20 - Step 4: Simplify right side
81,483,991.20x = 7,621,048,809,387,280 - Step 5: Solve for x
x = 7,621,048,809,387,280/81,483,991.20 - Step 6: Final answer
x = 93,528,172.80
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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.