Finding the Fourth Proportional to 103,373,618.09, 142,656,549.68 and 56,965,532.81
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Solution
The fourth proportional to 103,373,618.09, 142,656,549.68 and 56,965,532.81 is: 78,612,962.49
Step by Step Solution
- Step 1: Write the proportion equation
103,373,618.09 : 142,656,549.68 = 56,965,532.81 : x - Step 2: Convert to fraction form
103,373,618.09/142,656,549.68 = 56,965,532.81/x - Step 3: Cross multiply
103,373,618.09x = 142,656,549.68 × 56,965,532.81 - Step 4: Simplify right side
103,373,618.09x = 8,126,506,360,786,566 - Step 5: Solve for x
x = 8,126,506,360,786,566/103,373,618.09 - Step 6: Final answer
x = 78,612,962.49
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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.