Finding the Fourth Proportional to 42,242,251.34, 63,390,031.09 and 17,981,138.63
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Solution
The fourth proportional to 42,242,251.34, 63,390,031.09 and 17,981,138.63 is: 26,983,053.70
Step by Step Solution
- Step 1: Write the proportion equation
42,242,251.34 : 63,390,031.09 = 17,981,138.63 : x - Step 2: Convert to fraction form
42,242,251.34/63,390,031.09 = 17,981,138.63/x - Step 3: Cross multiply
42,242,251.34x = 63,390,031.09 × 17,981,138.63 - Step 4: Simplify right side
42,242,251.34x = 1,139,824,936,382,444.25 - Step 5: Solve for x
x = 1,139,824,936,382,444.25/42,242,251.34 - Step 6: Final answer
x = 26,983,053.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.