Finding the Fourth Proportional to 83,420.08, 115,119.14 and 45,178.74
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Solution
The fourth proportional to 83,420.08, 115,119.14 and 45,178.74 is: 62,346.35
Step by Step Solution
- Step 1: Write the proportion equation
83,420.08 : 115,119.14 = 45,178.74 : x - Step 2: Convert to fraction form
83,420.08/115,119.14 = 45,178.74/x - Step 3: Cross multiply
83,420.08x = 115,119.14 × 45,178.74 - Step 4: Simplify right side
83,420.08x = 5,200,937,695.08 - Step 5: Solve for x
x = 5,200,937,695.08/83,420.08 - Step 6: Final answer
x = 62,346.35
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1.5x scale
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.