Finding the Fourth Proportional to 90,210.84, 135,319.50 and 27,031.68
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Solution
The fourth proportional to 90,210.84, 135,319.50 and 27,031.68 is: 40,548.49
Step by Step Solution
- Step 1: Write the proportion equation
90,210.84 : 135,319.50 = 27,031.68 : x - Step 2: Convert to fraction form
90,210.84/135,319.50 = 27,031.68/x - Step 3: Cross multiply
90,210.84x = 135,319.50 × 27,031.68 - Step 4: Simplify right side
90,210.84x = 3,657,913,421.76 - Step 5: Solve for x
x = 3,657,913,421.76/90,210.84 - Step 6: Final answer
x = 40,548.49
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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.