Finding the Fourth Proportional to 98,109.36, 135,398.52 and 55,669.68
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Solution
The fourth proportional to 98,109.36, 135,398.52 and 55,669.68 is: 76,828.47
Step by Step Solution
- Step 1: Write the proportion equation
98,109.36 : 135,398.52 = 55,669.68 : x - Step 2: Convert to fraction form
98,109.36/135,398.52 = 55,669.68/x - Step 3: Cross multiply
98,109.36x = 135,398.52 × 55,669.68 - Step 4: Simplify right side
98,109.36x = 7,537,592,280.87 - Step 5: Solve for x
x = 7,537,592,280.87/98,109.36 - Step 6: Final answer
x = 76,828.47
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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.