Finding the Fourth Proportional to 98,971.47, 136,587.87 and 56,529.09
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Solution
The fourth proportional to 98,971.47, 136,587.87 and 56,529.09 is: 78,014.28
Step by Step Solution
- Step 1: Write the proportion equation
98,971.47 : 136,587.87 = 56,529.09 : x - Step 2: Convert to fraction form
98,971.47/136,587.87 = 56,529.09/x - Step 3: Cross multiply
98,971.47x = 136,587.87 × 56,529.09 - Step 4: Simplify right side
98,971.47x = 7,721,187,996.14 - Step 5: Solve for x
x = 7,721,187,996.14/98,971.47 - Step 6: Final answer
x = 78,014.28
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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.