Finding the Fourth Proportional to 77,677,773.80, 107,193,808.35 and 42,395,831.87
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Solution
The fourth proportional to 77,677,773.80, 107,193,808.35 and 42,395,831.87 is: 58,505,418.65
Step by Step Solution
- Step 1: Write the proportion equation
77,677,773.80 : 107,193,808.35 = 42,395,831.87 : x - Step 2: Convert to fraction form
77,677,773.80/107,193,808.35 = 42,395,831.87/x - Step 3: Cross multiply
77,677,773.80x = 107,193,808.35 × 42,395,831.87 - Step 4: Simplify right side
77,677,773.80x = 4,544,570,675,775,633 - Step 5: Solve for x
x = 4,544,570,675,775,633/77,677,773.80 - Step 6: Final answer
x = 58,505,418.65
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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.