Finding the Fourth Proportional to 38,566,420.56, 53,221,513.08 and 21,163,056.72
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Solution
The fourth proportional to 38,566,420.56, 53,221,513.08 and 21,163,056.72 is: 29,204,937.45
Step by Step Solution
- Step 1: Write the proportion equation
38,566,420.56 : 53,221,513.08 = 21,163,056.72 : x - Step 2: Convert to fraction form
38,566,420.56/53,221,513.08 = 21,163,056.72/x - Step 3: Cross multiply
38,566,420.56x = 53,221,513.08 × 21,163,056.72 - Step 4: Simplify right side
38,566,420.56x = 1,126,329,900,036,261.75 - Step 5: Solve for x
x = 1,126,329,900,036,261.75/38,566,420.56 - Step 6: Final answer
x = 29,204,937.45
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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.