Finding the Fourth Proportional to 79,046,031.80, 118,569,047.70 and 65,609,103.80
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Solution
The fourth proportional to 79,046,031.80, 118,569,047.70 and 65,609,103.80 is: 98,413,655.70
Step by Step Solution
- Step 1: Write the proportion equation
79,046,031.80 : 118,569,047.70 = 65,609,103.80 : x - Step 2: Convert to fraction form
79,046,031.80/118,569,047.70 = 65,609,103.80/x - Step 3: Cross multiply
79,046,031.80x = 118,569,047.70 × 65,609,103.80 - Step 4: Simplify right side
79,046,031.80x = 7,779,208,958,016,451 - Step 5: Solve for x
x = 7,779,208,958,016,451/79,046,031.80 - Step 6: Final answer
x = 98,413,655.70
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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.