Finding the Fourth Proportional to 74,858,955.64, 103,158,202.73 and 57,237,823.70
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Solution
The fourth proportional to 74,858,955.64, 103,158,202.73 and 57,237,823.70 is: 78,875,679.88
Step by Step Solution
- Step 1: Write the proportion equation
74,858,955.64 : 103,158,202.73 = 57,237,823.70 : x - Step 2: Convert to fraction form
74,858,955.64/103,158,202.73 = 57,237,823.70/x - Step 3: Cross multiply
74,858,955.64x = 103,158,202.73 × 57,237,823.70 - Step 4: Simplify right side
74,858,955.64x = 5,904,551,020,653,461 - Step 5: Solve for x
x = 5,904,551,020,653,461/74,858,955.64 - Step 6: Final answer
x = 78,875,679.88
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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.