Finding the Fourth Proportional to 78,430.08, 108,209.61 and 44,433.12
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Solution
The fourth proportional to 78,430.08, 108,209.61 and 44,433.12 is: 61,304.17
Step by Step Solution
- Step 1: Write the proportion equation
78,430.08 : 108,209.61 = 44,433.12 : x - Step 2: Convert to fraction form
78,430.08/108,209.61 = 44,433.12/x - Step 3: Cross multiply
78,430.08x = 108,209.61 × 44,433.12 - Step 4: Simplify right side
78,430.08x = 4,808,090,586.28 - Step 5: Solve for x
x = 4,808,090,586.28/78,430.08 - Step 6: Final answer
x = 61,304.17
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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.