Finding the Fourth Proportional to 74,155.02, 102,328.29 and 42,319.59
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Solution
The fourth proportional to 74,155.02, 102,328.29 and 42,319.59 is: 58,397.82
Step by Step Solution
- Step 1: Write the proportion equation
74,155.02 : 102,328.29 = 42,319.59 : x - Step 2: Convert to fraction form
74,155.02/102,328.29 = 42,319.59/x - Step 3: Cross multiply
74,155.02x = 102,328.29 × 42,319.59 - Step 4: Simplify right side
74,155.02x = 4,330,491,278.20 - Step 5: Solve for x
x = 4,330,491,278.20/74,155.02 - Step 6: Final answer
x = 58,397.82
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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.