Finding the Fourth Proportional to 103,539,578.94, 142,887,609.63 and 57,132,821.34
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Solution
The fourth proportional to 103,539,578.94, 142,887,609.63 and 57,132,821.34 is: 78,844,943.70
Step by Step Solution
- Step 1: Write the proportion equation
103,539,578.94 : 142,887,609.63 = 57,132,821.34 : x - Step 2: Convert to fraction form
103,539,578.94/142,887,609.63 = 57,132,821.34/x - Step 3: Cross multiply
103,539,578.94x = 142,887,609.63 × 57,132,821.34 - Step 4: Simplify right side
103,539,578.94x = 8,163,572,272,690,454 - Step 5: Solve for x
x = 8,163,572,272,690,454/103,539,578.94 - Step 6: Final answer
x = 78,844,943.70
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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.