Finding the Fourth Proportional to 81,374.96, 121,848.84 and 65,495.60
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Solution
The fourth proportional to 81,374.96, 121,848.84 and 65,495.60 is: 98,071.48
Step by Step Solution
- Step 1: Write the proportion equation
81,374.96 : 121,848.84 = 65,495.60 : x - Step 2: Convert to fraction form
81,374.96/121,848.84 = 65,495.60/x - Step 3: Cross multiply
81,374.96x = 121,848.84 × 65,495.60 - Step 4: Simplify right side
81,374.96x = 7,980,562,885.10 - Step 5: Solve for x
x = 7,980,562,885.10/81,374.96 - Step 6: Final answer
x = 98,071.48
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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.