Finding the Fourth Proportional to 85,811,257.80, 128,716,886.70 and 39,753,037.80
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Solution
The fourth proportional to 85,811,257.80, 128,716,886.70 and 39,753,037.80 is: 59,629,556.70
Step by Step Solution
- Step 1: Write the proportion equation
85,811,257.80 : 128,716,886.70 = 39,753,037.80 : x - Step 2: Convert to fraction form
85,811,257.80/128,716,886.70 = 39,753,037.80/x - Step 3: Cross multiply
85,811,257.80x = 128,716,886.70 × 39,753,037.80 - Step 4: Simplify right side
85,811,257.80x = 5,116,887,262,483,417 - Step 5: Solve for x
x = 5,116,887,262,483,417/85,811,257.80 - Step 6: Final answer
x = 59,629,556.70
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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.