Finding the Fourth Proportional to 86,971,946.12, 120,021,362.85 and 47,814,389.09
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Solution
The fourth proportional to 86,971,946.12, 120,021,362.85 and 47,814,389.09 is: 65,983,899.39
Step by Step Solution
- Step 1: Write the proportion equation
86,971,946.12 : 120,021,362.85 = 47,814,389.09 : x - Step 2: Convert to fraction form
86,971,946.12/120,021,362.85 = 47,814,389.09/x - Step 3: Cross multiply
86,971,946.12x = 120,021,362.85 × 47,814,389.09 - Step 4: Simplify right side
86,971,946.12x = 5,738,748,142,421,971 - Step 5: Solve for x
x = 5,738,748,142,421,971/86,971,946.12 - Step 6: Final answer
x = 65,983,899.39
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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.