Finding the Fourth Proportional to 77,970.63, 107,599.39 and 42,160.55
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Solution
The fourth proportional to 77,970.63, 107,599.39 and 42,160.55 is: 58,181.52
Step by Step Solution
- Step 1: Write the proportion equation
77,970.63 : 107,599.39 = 42,160.55 : x - Step 2: Convert to fraction form
77,970.63/107,599.39 = 42,160.55/x - Step 3: Cross multiply
77,970.63x = 107,599.39 × 42,160.55 - Step 4: Simplify right side
77,970.63x = 4,536,449,462.06 - Step 5: Solve for x
x = 4,536,449,462.06/77,970.63 - Step 6: Final answer
x = 58,181.52
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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.