Finding the Fourth Proportional to 38,774,269.92, 53,508,818.16 and 21,370,659.68
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Solution
The fourth proportional to 38,774,269.92, 53,508,818.16 and 21,370,659.68 is: 29,491,689.85
Step by Step Solution
- Step 1: Write the proportion equation
38,774,269.92 : 53,508,818.16 = 21,370,659.68 : x - Step 2: Convert to fraction form
38,774,269.92/53,508,818.16 = 21,370,659.68/x - Step 3: Cross multiply
38,774,269.92x = 53,508,818.16 × 21,370,659.68 - Step 4: Simplify right side
38,774,269.92x = 1,143,518,742,776,363.75 - Step 5: Solve for x
x = 1,143,518,742,776,363.75/38,774,269.92 - Step 6: Final answer
x = 29,491,689.85
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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.