Finding the Fourth Proportional to 78,176,486.34, 107,883,678.06 and 43,369,177.68
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Solution
The fourth proportional to 78,176,486.34, 107,883,678.06 and 43,369,177.68 is: 59,849,535.60
Step by Step Solution
- Step 1: Write the proportion equation
78,176,486.34 : 107,883,678.06 = 43,369,177.68 : x - Step 2: Convert to fraction form
78,176,486.34/107,883,678.06 = 43,369,177.68/x - Step 3: Cross multiply
78,176,486.34x = 107,883,678.06 × 43,369,177.68 - Step 4: Simplify right side
78,176,486.34x = 4,678,826,402,556,058 - Step 5: Solve for x
x = 4,678,826,402,556,058/78,176,486.34 - Step 6: Final answer
x = 59,849,535.60
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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.