Finding the Fourth Proportional to 98,402,031.68, 135,771,876.96 and 57,124,418.72
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Solution
The fourth proportional to 98,402,031.68, 135,771,876.96 and 57,124,418.72 is: 78,818,388.38
Step by Step Solution
- Step 1: Write the proportion equation
98,402,031.68 : 135,771,876.96 = 57,124,418.72 : x - Step 2: Convert to fraction form
98,402,031.68/135,771,876.96 = 57,124,418.72/x - Step 3: Cross multiply
98,402,031.68x = 135,771,876.96 × 57,124,418.72 - Step 4: Simplify right side
98,402,031.68x = 7,755,889,549,863,361 - Step 5: Solve for x
x = 7,755,889,549,863,361/98,402,031.68 - Step 6: Final answer
x = 78,818,388.38
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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.