Finding the Fourth Proportional to 85,811,291.80, 128,716,937.70 and 39,753,071.80
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Solution
The fourth proportional to 85,811,291.80, 128,716,937.70 and 39,753,071.80 is: 59,629,607.70
Step by Step Solution
- Step 1: Write the proportion equation
85,811,291.80 : 128,716,937.70 = 39,753,071.80 : x - Step 2: Convert to fraction form
85,811,291.80/128,716,937.70 = 39,753,071.80/x - Step 3: Cross multiply
85,811,291.80x = 128,716,937.70 × 39,753,071.80 - Step 4: Simplify right side
85,811,291.80x = 5,116,893,666,264,227 - Step 5: Solve for x
x = 5,116,893,666,264,227/85,811,291.80 - Step 6: Final answer
x = 59,629,607.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.