Finding the Fourth Proportional to 88,178.68, 121,721.47 and 61,336.76
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Solution
The fourth proportional to 88,178.68, 121,721.47 and 61,336.76 is: 84,669.00
Step by Step Solution
- Step 1: Write the proportion equation
88,178.68 : 121,721.47 = 61,336.76 : x - Step 2: Convert to fraction form
88,178.68/121,721.47 = 61,336.76/x - Step 3: Cross multiply
88,178.68x = 121,721.47 × 61,336.76 - Step 4: Simplify right side
88,178.68x = 7,466,000,592.24 - Step 5: Solve for x
x = 7,466,000,592.24/88,178.68 - Step 6: Final answer
x = 84,669.00
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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.