Finding the Fourth Proportional to 98,927.80, 136,567.65 and 56,478.13
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Solution
The fourth proportional to 98,927.80, 136,567.65 and 56,478.13 is: 77,966.82
Step by Step Solution
- Step 1: Write the proportion equation
98,927.80 : 136,567.65 = 56,478.13 : x - Step 2: Convert to fraction form
98,927.80/136,567.65 = 56,478.13/x - Step 3: Cross multiply
98,927.80x = 136,567.65 × 56,478.13 - Step 4: Simplify right side
98,927.80x = 7,713,085,490.49 - Step 5: Solve for x
x = 7,713,085,490.49/98,927.80 - Step 6: Final answer
x = 77,966.82
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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.