Finding the Fourth Proportional to 70,985,809.36, 97,960,482.12 and 38,390,761.04
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Solution
The fourth proportional to 70,985,809.36, 97,960,482.12 and 38,390,761.04 is: 52,979,285.50
Step by Step Solution
- Step 1: Write the proportion equation
70,985,809.36 : 97,960,482.12 = 38,390,761.04 : x - Step 2: Convert to fraction form
70,985,809.36/97,960,482.12 = 38,390,761.04/x - Step 3: Cross multiply
70,985,809.36x = 97,960,482.12 × 38,390,761.04 - Step 4: Simplify right side
70,985,809.36x = 3,760,777,460,432,112.50 - Step 5: Solve for x
x = 3,760,777,460,432,112.50/70,985,809.36 - Step 6: Final answer
x = 52,979,285.50
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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.