Finding the Fourth Proportional to 81,349.29, 112,258.74 and 47,358.75
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Solution
The fourth proportional to 81,349.29, 112,258.74 and 47,358.75 is: 65,353.17
Step by Step Solution
- Step 1: Write the proportion equation
81,349.29 : 112,258.74 = 47,358.75 : x - Step 2: Convert to fraction form
81,349.29/112,258.74 = 47,358.75/x - Step 3: Cross multiply
81,349.29x = 112,258.74 × 47,358.75 - Step 4: Simplify right side
81,349.29x = 5,316,433,602.98 - Step 5: Solve for x
x = 5,316,433,602.98/81,349.29 - Step 6: Final answer
x = 65,353.17
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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.