Finding the Fourth Proportional to 98,865.36, 136,426.68 and 56,418.12
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Solution
The fourth proportional to 98,865.36, 136,426.68 and 56,418.12 is: 77,852.72
Step by Step Solution
- Step 1: Write the proportion equation
98,865.36 : 136,426.68 = 56,418.12 : x - Step 2: Convert to fraction form
98,865.36/136,426.68 = 56,418.12/x - Step 3: Cross multiply
98,865.36x = 136,426.68 × 56,418.12 - Step 4: Simplify right side
98,865.36x = 7,696,936,803.44 - Step 5: Solve for x
x = 7,696,936,803.44/98,865.36 - Step 6: Final answer
x = 77,852.72
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1.5x scale
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.