Finding the Fourth Proportional to 78,081,374.64, 107,752,307.04 and 43,276,312.08
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Solution
The fourth proportional to 78,081,374.64, 107,752,307.04 and 43,276,312.08 is: 59,721,316.23
Step by Step Solution
- Step 1: Write the proportion equation
78,081,374.64 : 107,752,307.04 = 43,276,312.08 : x - Step 2: Convert to fraction form
78,081,374.64/107,752,307.04 = 43,276,312.08/x - Step 3: Cross multiply
78,081,374.64x = 107,752,307.04 × 43,276,312.08 - Step 4: Simplify right side
78,081,374.64x = 4,663,122,466,803,021 - Step 5: Solve for x
x = 4,663,122,466,803,021/78,081,374.64 - Step 6: Final answer
x = 59,721,316.23
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.