Finding the Fourth Proportional to 70,715,153.20, 97,585,931.40 and 39,775,343.44
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Solution
The fourth proportional to 70,715,153.20, 97,585,931.40 and 39,775,343.44 is: 54,889,422.71
Step by Step Solution
- Step 1: Write the proportion equation
70,715,153.20 : 97,585,931.40 = 39,775,343.44 : x - Step 2: Convert to fraction form
70,715,153.20/97,585,931.40 = 39,775,343.44/x - Step 3: Cross multiply
70,715,153.20x = 97,585,931.40 × 39,775,343.44 - Step 4: Simplify right side
70,715,153.20x = 3,881,513,936,347,280 - Step 5: Solve for x
x = 3,881,513,936,347,280/70,715,153.20 - Step 6: Final answer
x = 54,889,422.71
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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.