Finding the Fourth Proportional to 98,926.78, 136,515.99 and 56,477.02
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Solution
The fourth proportional to 98,926.78, 136,515.99 and 56,477.02 is: 77,936.59
Step by Step Solution
- Step 1: Write the proportion equation
98,926.78 : 136,515.99 = 56,477.02 : x - Step 2: Convert to fraction form
98,926.78/136,515.99 = 56,477.02/x - Step 3: Cross multiply
98,926.78x = 136,515.99 × 56,477.02 - Step 4: Simplify right side
98,926.78x = 7,710,016,297.55 - Step 5: Solve for x
x = 7,710,016,297.55/98,926.78 - Step 6: Final answer
x = 77,936.59
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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.