Finding the Fourth Proportional to 39,420,430.80, 59,130,791.74 and 12,126,534.54
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Solution
The fourth proportional to 39,420,430.80, 59,130,791.74 and 12,126,534.54 is: 18,189,846.58
Step by Step Solution
- Step 1: Write the proportion equation
39,420,430.80 : 59,130,791.74 = 12,126,534.54 : x - Step 2: Convert to fraction form
39,420,430.80/59,130,791.74 = 12,126,534.54/x - Step 3: Cross multiply
39,420,430.80x = 59,130,791.74 × 12,126,534.54 - Step 4: Simplify right side
39,420,430.80x = 717,051,588,412,656.62 - Step 5: Solve for x
x = 717,051,588,412,656.62/39,420,430.80 - Step 6: Final answer
x = 18,189,846.58
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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.