Finding the Fourth Proportional to 85,536,029.80, 128,304,044.70 and 47,272,277.80
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Solution
The fourth proportional to 85,536,029.80, 128,304,044.70 and 47,272,277.80 is: 70,908,416.70
Step by Step Solution
- Step 1: Write the proportion equation
85,536,029.80 : 128,304,044.70 = 47,272,277.80 : x - Step 2: Convert to fraction form
85,536,029.80/128,304,044.70 = 47,272,277.80/x - Step 3: Cross multiply
85,536,029.80x = 128,304,044.70 × 47,272,277.80 - Step 4: Simplify right side
85,536,029.80x = 6,065,224,443,922,017 - Step 5: Solve for x
x = 6,065,224,443,922,017/85,536,029.80 - Step 6: Final answer
x = 70,908,416.70
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1.5x scale
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.