Finding the Fourth Proportional to 78,725,107.40, 118,087,661.10 and 48,334,425.80
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Solution
The fourth proportional to 78,725,107.40, 118,087,661.10 and 48,334,425.80 is: 72,501,638.70
Step by Step Solution
- Step 1: Write the proportion equation
78,725,107.40 : 118,087,661.10 = 48,334,425.80 : x - Step 2: Convert to fraction form
78,725,107.40/118,087,661.10 = 48,334,425.80/x - Step 3: Cross multiply
78,725,107.40x = 118,087,661.10 × 48,334,425.80 - Step 4: Simplify right side
78,725,107.40x = 5,707,699,293,333,496 - Step 5: Solve for x
x = 5,707,699,293,333,496/78,725,107.40 - Step 6: Final answer
x = 72,501,638.70
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1.5x scale
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.