Finding the Fourth Proportional to 105,357.28, 145,381.12 and 62,338.08
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Solution
The fourth proportional to 105,357.28, 145,381.12 and 62,338.08 is: 86,019.49
Step by Step Solution
- Step 1: Write the proportion equation
105,357.28 : 145,381.12 = 62,338.08 : x - Step 2: Convert to fraction form
105,357.28/145,381.12 = 62,338.08/x - Step 3: Cross multiply
105,357.28x = 145,381.12 × 62,338.08 - Step 4: Simplify right side
105,357.28x = 9,062,779,889.05 - Step 5: Solve for x
x = 9,062,779,889.05/105,357.28 - Step 6: Final answer
x = 86,019.49
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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.