Finding the Fourth Proportional to 78,894,137.80, 118,341,206.70 and 64,545,230.80
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Solution
The fourth proportional to 78,894,137.80, 118,341,206.70 and 64,545,230.80 is: 96,817,846.20
Step by Step Solution
- Step 1: Write the proportion equation
78,894,137.80 : 118,341,206.70 = 64,545,230.80 : x - Step 2: Convert to fraction form
78,894,137.80/118,341,206.70 = 64,545,230.80/x - Step 3: Cross multiply
78,894,137.80x = 118,341,206.70 × 64,545,230.80 - Step 4: Simplify right side
78,894,137.80x = 7,638,360,499,602,006 - Step 5: Solve for x
x = 7,638,360,499,602,006/78,894,137.80 - Step 6: Final answer
x = 96,817,846.20
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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.