Finding the Fourth Proportional to 72,692,218.84, 100,315,902.66 and 39,652,614.76
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Solution
The fourth proportional to 72,692,218.84, 100,315,902.66 and 39,652,614.76 is: 54,720,957.84
Step by Step Solution
- Step 1: Write the proportion equation
72,692,218.84 : 100,315,902.66 = 39,652,614.76 : x - Step 2: Convert to fraction form
72,692,218.84/100,315,902.66 = 39,652,614.76/x - Step 3: Cross multiply
72,692,218.84x = 100,315,902.66 × 39,652,614.76 - Step 4: Simplify right side
72,692,218.84x = 3,977,787,842,478,639 - Step 5: Solve for x
x = 3,977,787,842,478,639/72,692,218.84 - Step 6: Final answer
x = 54,720,957.84
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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.