Finding the Fourth Proportional to 74,887.13, 103,348.47 and 40,898.79
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Solution
The fourth proportional to 74,887.13, 103,348.47 and 40,898.79 is: 56,442.64
Step by Step Solution
- Step 1: Write the proportion equation
74,887.13 : 103,348.47 = 40,898.79 : x - Step 2: Convert to fraction form
74,887.13/103,348.47 = 40,898.79/x - Step 3: Cross multiply
74,887.13x = 103,348.47 × 40,898.79 - Step 4: Simplify right side
74,887.13x = 4,226,827,524.72 - Step 5: Solve for x
x = 4,226,827,524.72/74,887.13 - Step 6: Final answer
x = 56,442.64
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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.