Finding the Fourth Proportional to 86,991,078.93, 119,936,248.80 and 71,252,122.02
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Solution
The fourth proportional to 86,991,078.93, 119,936,248.80 and 71,252,122.02 is: 98,236,650.69
Step by Step Solution
- Step 1: Write the proportion equation
86,991,078.93 : 119,936,248.80 = 71,252,122.02 : x - Step 2: Convert to fraction form
86,991,078.93/119,936,248.80 = 71,252,122.02/x - Step 3: Cross multiply
86,991,078.93x = 119,936,248.80 × 71,252,122.02 - Step 4: Simplify right side
86,991,078.93x = 8,545,712,234,118,678 - Step 5: Solve for x
x = 8,545,712,234,118,678/86,991,078.93 - Step 6: Final answer
x = 98,236,650.69
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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.