Finding the Fourth Proportional to 74,340.60, 102,590.12 and 40,349.08
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Solution
The fourth proportional to 74,340.60, 102,590.12 and 40,349.08 is: 55,681.78
Step by Step Solution
- Step 1: Write the proportion equation
74,340.60 : 102,590.12 = 40,349.08 : x - Step 2: Convert to fraction form
74,340.60/102,590.12 = 40,349.08/x - Step 3: Cross multiply
74,340.60x = 102,590.12 × 40,349.08 - Step 4: Simplify right side
74,340.60x = 4,139,416,959.09 - Step 5: Solve for x
x = 4,139,416,959.09/74,340.60 - Step 6: Final answer
x = 55,681.78
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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.