Finding the Fourth Proportional to 87,974.71, 121,242.28 and 62,482.20
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Solution
The fourth proportional to 87,974.71, 121,242.28 and 62,482.20 is: 86,109.80
Step by Step Solution
- Step 1: Write the proportion equation
87,974.71 : 121,242.28 = 62,482.20 : x - Step 2: Convert to fraction form
87,974.71/121,242.28 = 62,482.20/x - Step 3: Cross multiply
87,974.71x = 121,242.28 × 62,482.20 - Step 4: Simplify right side
87,974.71x = 7,575,484,387.42 - Step 5: Solve for x
x = 7,575,484,387.42/87,974.71 - Step 6: Final answer
x = 86,109.80
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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.