Finding the Fourth Proportional to 79,128,634.17, 118,549,460.34 and 77,406,765.33
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Solution
The fourth proportional to 79,128,634.17, 118,549,460.34 and 77,406,765.33 is: 115,969,779.50
Step by Step Solution
- Step 1: Write the proportion equation
79,128,634.17 : 118,549,460.34 = 77,406,765.33 : x - Step 2: Convert to fraction form
79,128,634.17/118,549,460.34 = 77,406,765.33/x - Step 3: Cross multiply
79,128,634.17x = 118,549,460.34 × 77,406,765.33 - Step 4: Simplify right side
79,128,634.17x = 9,176,530,256,536,522 - Step 5: Solve for x
x = 9,176,530,256,536,522/79,128,634.17 - Step 6: Final answer
x = 115,969,779.50
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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.