Finding the Fourth Proportional to 76,478,426.76, 114,635,953.62 and 43,618,248.75
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Solution
The fourth proportional to 76,478,426.76, 114,635,953.62 and 43,618,248.75 is: 65,380,784.52
Step by Step Solution
- Step 1: Write the proportion equation
76,478,426.76 : 114,635,953.62 = 43,618,248.75 : x - Step 2: Convert to fraction form
76,478,426.76/114,635,953.62 = 43,618,248.75/x - Step 3: Cross multiply
76,478,426.76x = 114,635,953.62 × 43,618,248.75 - Step 4: Simplify right side
76,478,426.76x = 5,000,219,540,690,623 - Step 5: Solve for x
x = 5,000,219,540,690,623/76,478,426.76 - Step 6: Final answer
x = 65,380,784.52
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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.