Finding the Fourth Proportional to 81,781,808.40, 122,672,712.60 and 58,823,557.20
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Solution
The fourth proportional to 81,781,808.40, 122,672,712.60 and 58,823,557.20 is: 88,235,335.80
Step by Step Solution
- Step 1: Write the proportion equation
81,781,808.40 : 122,672,712.60 = 58,823,557.20 : x - Step 2: Convert to fraction form
81,781,808.40/122,672,712.60 = 58,823,557.20/x - Step 3: Cross multiply
81,781,808.40x = 122,672,712.60 × 58,823,557.20 - Step 4: Simplify right side
81,781,808.40x = 7,216,045,326,505,261 - Step 5: Solve for x
x = 7,216,045,326,505,261/81,781,808.40 - Step 6: Final answer
x = 88,235,335.80
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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.