Finding the Fourth Proportional to 98,927.80, 136,567.66 and 56,478.14
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Solution
The fourth proportional to 98,927.80, 136,567.66 and 56,478.14 is: 77,966.83
Step by Step Solution
- Step 1: Write the proportion equation
98,927.80 : 136,567.66 = 56,478.14 : x - Step 2: Convert to fraction form
98,927.80/136,567.66 = 56,478.14/x - Step 3: Cross multiply
98,927.80x = 136,567.66 × 56,478.14 - Step 4: Simplify right side
98,927.80x = 7,713,087,420.95 - Step 5: Solve for x
x = 7,713,087,420.95/98,927.80 - Step 6: Final answer
x = 77,966.83
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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.