Finding the Fourth Proportional to 105,737.49, 145,921.95 and 57,992.58
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Solution
The fourth proportional to 105,737.49, 145,921.95 and 57,992.58 is: 80,032.07
Step by Step Solution
- Step 1: Write the proportion equation
105,737.49 : 145,921.95 = 57,992.58 : x - Step 2: Convert to fraction form
105,737.49/145,921.95 = 57,992.58/x - Step 3: Cross multiply
105,737.49x = 145,921.95 × 57,992.58 - Step 4: Simplify right side
105,737.49x = 8,462,390,359.13 - Step 5: Solve for x
x = 8,462,390,359.13/105,737.49 - Step 6: Final answer
x = 80,032.07
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1.5x scale
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.