Finding the Fourth Proportional to 78,312,244.80, 117,468,367.20 and 62,187,931.20
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Solution
The fourth proportional to 78,312,244.80, 117,468,367.20 and 62,187,931.20 is: 93,281,896.80
Step by Step Solution
- Step 1: Write the proportion equation
78,312,244.80 : 117,468,367.20 = 62,187,931.20 : x - Step 2: Convert to fraction form
78,312,244.80/117,468,367.20 = 62,187,931.20/x - Step 3: Cross multiply
78,312,244.80x = 117,468,367.20 × 62,187,931.20 - Step 4: Simplify right side
78,312,244.80x = 7,305,114,737,609,937 - Step 5: Solve for x
x = 7,305,114,737,609,937/78,312,244.80 - Step 6: Final answer
x = 93,281,896.80
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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.