Finding the Fourth Proportional to 78,894,145.80, 118,341,218.70 and 46,561,537.80
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Solution
The fourth proportional to 78,894,145.80, 118,341,218.70 and 46,561,537.80 is: 69,842,306.70
Step by Step Solution
- Step 1: Write the proportion equation
78,894,145.80 : 118,341,218.70 = 46,561,537.80 : x - Step 2: Convert to fraction form
78,894,145.80/118,341,218.70 = 46,561,537.80/x - Step 3: Cross multiply
78,894,145.80x = 118,341,218.70 × 46,561,537.80 - Step 4: Simplify right side
78,894,145.80x = 5,510,149,127,798,117 - Step 5: Solve for x
x = 5,510,149,127,798,117/78,894,145.80 - Step 6: Final answer
x = 69,842,306.70
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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.