Finding the Fourth Proportional to 70,305.99, 105,459.38 and 28,752.99
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Solution
The fourth proportional to 70,305.99, 105,459.38 and 28,752.99 is: 43,129.65
Step by Step Solution
- Step 1: Write the proportion equation
70,305.99 : 105,459.38 = 28,752.99 : x - Step 2: Convert to fraction form
70,305.99/105,459.38 = 28,752.99/x - Step 3: Cross multiply
70,305.99x = 105,459.38 × 28,752.99 - Step 4: Simplify right side
70,305.99x = 3,032,272,498.55 - Step 5: Solve for x
x = 3,032,272,498.55/70,305.99 - Step 6: Final answer
x = 43,129.65
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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.