Finding the Fourth Proportional to 87,918,591.42, 121,216,154.67 and 62,830,665.54
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Solution
The fourth proportional to 87,918,591.42, 121,216,154.67 and 62,830,665.54 is: 86,626,634.36
Step by Step Solution
- Step 1: Write the proportion equation
87,918,591.42 : 121,216,154.67 = 62,830,665.54 : x - Step 2: Convert to fraction form
87,918,591.42/121,216,154.67 = 62,830,665.54/x - Step 3: Cross multiply
87,918,591.42x = 121,216,154.67 × 62,830,665.54 - Step 4: Simplify right side
87,918,591.42x = 7,616,091,672,115,679 - Step 5: Solve for x
x = 7,616,091,672,115,679/87,918,591.42 - Step 6: Final answer
x = 86,626,634.36
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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.