Finding the Fourth Proportional to 57,128,208.03, 78,890,733.42 and 39,772,012.02
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Solution
The fourth proportional to 57,128,208.03, 78,890,733.42 and 39,772,012.02 is: 54,922,835.95
Step by Step Solution
- Step 1: Write the proportion equation
57,128,208.03 : 78,890,733.42 = 39,772,012.02 : x - Step 2: Convert to fraction form
57,128,208.03/78,890,733.42 = 39,772,012.02/x - Step 3: Cross multiply
57,128,208.03x = 78,890,733.42 × 39,772,012.02 - Step 4: Simplify right side
57,128,208.03x = 3,137,643,197,846,856 - Step 5: Solve for x
x = 3,137,643,197,846,856/57,128,208.03 - Step 6: Final answer
x = 54,922,835.95
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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.