Finding the Fourth Proportional to 38,810,984.36, 53,558,220.12 and 21,406,955.80
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Solution
The fourth proportional to 38,810,984.36, 53,558,220.12 and 21,406,955.80 is: 29,541,081.47
Step by Step Solution
- Step 1: Write the proportion equation
38,810,984.36 : 53,558,220.12 = 21,406,955.80 : x - Step 2: Convert to fraction form
38,810,984.36/53,558,220.12 = 21,406,955.80/x - Step 3: Cross multiply
38,810,984.36x = 53,558,220.12 × 21,406,955.80 - Step 4: Simplify right side
38,810,984.36x = 1,146,518,450,835,510.75 - Step 5: Solve for x
x = 1,146,518,450,835,510.75/38,810,984.36 - Step 6: Final answer
x = 29,541,081.47
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1.5x scale
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.