Finding the Fourth Proportional to 86,971.68, 119,903.76 and 56,697.12
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Solution
The fourth proportional to 86,971.68, 119,903.76 and 56,697.12 is: 78,165.65
Step by Step Solution
- Step 1: Write the proportion equation
86,971.68 : 119,903.76 = 56,697.12 : x - Step 2: Convert to fraction form
86,971.68/119,903.76 = 56,697.12/x - Step 3: Cross multiply
86,971.68x = 119,903.76 × 56,697.12 - Step 4: Simplify right side
86,971.68x = 6,798,197,869.17 - Step 5: Solve for x
x = 6,798,197,869.17/86,971.68 - Step 6: Final answer
x = 78,165.65
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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.