Finding the Fourth Proportional to 74,215.40, 102,417.03 and 40,224.74
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Solution
The fourth proportional to 74,215.40, 102,417.03 and 40,224.74 is: 55,510.02
Step by Step Solution
- Step 1: Write the proportion equation
74,215.40 : 102,417.03 = 40,224.74 : x - Step 2: Convert to fraction form
74,215.40/102,417.03 = 40,224.74/x - Step 3: Cross multiply
74,215.40x = 102,417.03 × 40,224.74 - Step 4: Simplify right side
74,215.40x = 4,119,697,891.24 - Step 5: Solve for x
x = 4,119,697,891.24/74,215.40 - Step 6: Final answer
x = 55,510.02
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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.