Finding the Fourth Proportional to 7,153,031.68, 9,870,986.88 and 3,933,767.68
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Solution
The fourth proportional to 7,153,031.68, 9,870,986.88 and 3,933,767.68 is: 5,428,491.15
Step by Step Solution
- Step 1: Write the proportion equation
7,153,031.68 : 9,870,986.88 = 3,933,767.68 : x - Step 2: Convert to fraction form
7,153,031.68/9,870,986.88 = 3,933,767.68/x - Step 3: Cross multiply
7,153,031.68x = 9,870,986.88 × 3,933,767.68 - Step 4: Simplify right side
7,153,031.68x = 38,830,169,158,248.05 - Step 5: Solve for x
x = 38,830,169,158,248.05/7,153,031.68 - Step 6: Final answer
x = 5,428,491.15
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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.