Finding the Fourth Proportional to 74,756,867.70, 112,135,301.55 and 20,169,347.70
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Solution
The fourth proportional to 74,756,867.70, 112,135,301.55 and 20,169,347.70 is: 30,254,021.55
Step by Step Solution
- Step 1: Write the proportion equation
74,756,867.70 : 112,135,301.55 = 20,169,347.70 : x - Step 2: Convert to fraction form
74,756,867.70/112,135,301.55 = 20,169,347.70/x - Step 3: Cross multiply
74,756,867.70x = 112,135,301.55 × 20,169,347.70 - Step 4: Simplify right side
74,756,867.70x = 2,261,695,886,406,299 - Step 5: Solve for x
x = 2,261,695,886,406,299/74,756,867.70 - Step 6: Final answer
x = 30,254,021.55
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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.