Finding the Fourth Proportional to 98,539.79, 135,985.05 and 56,098.31
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Solution
The fourth proportional to 98,539.79, 135,985.05 and 56,098.31 is: 77,415.75
Step by Step Solution
- Step 1: Write the proportion equation
98,539.79 : 135,985.05 = 56,098.31 : x - Step 2: Convert to fraction form
98,539.79/135,985.05 = 56,098.31/x - Step 3: Cross multiply
98,539.79x = 135,985.05 × 56,098.31 - Step 4: Simplify right side
98,539.79x = 7,628,531,830.23 - Step 5: Solve for x
x = 7,628,531,830.23/98,539.79 - Step 6: Final answer
x = 77,415.75
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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.