Finding the Fourth Proportional to 102,070.98, 140,862.64 and 56,753.62
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Solution
The fourth proportional to 102,070.98, 140,862.64 and 56,753.62 is: 78,322.60
Step by Step Solution
- Step 1: Write the proportion equation
102,070.98 : 140,862.64 = 56,753.62 : x - Step 2: Convert to fraction form
102,070.98/140,862.64 = 56,753.62/x - Step 3: Cross multiply
102,070.98x = 140,862.64 × 56,753.62 - Step 4: Simplify right side
102,070.98x = 7,994,464,742.76 - Step 5: Solve for x
x = 7,994,464,742.76/102,070.98 - Step 6: Final answer
x = 78,322.60
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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.