Finding the Fourth Proportional to 78,519,207.60, 117,778,811.40 and 44,081,830.80
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Solution
The fourth proportional to 78,519,207.60, 117,778,811.40 and 44,081,830.80 is: 66,122,746.20
Step by Step Solution
- Step 1: Write the proportion equation
78,519,207.60 : 117,778,811.40 = 44,081,830.80 : x - Step 2: Convert to fraction form
78,519,207.60/117,778,811.40 = 44,081,830.80/x - Step 3: Cross multiply
78,519,207.60x = 117,778,811.40 × 44,081,830.80 - Step 4: Simplify right side
78,519,207.60x = 5,191,905,635,959,911 - Step 5: Solve for x
x = 5,191,905,635,959,911/78,519,207.60 - Step 6: Final answer
x = 66,122,746.20
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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.