Finding the Fourth Proportional to 77,924.84, 107,536.30 and 42,114.80
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Solution
The fourth proportional to 77,924.84, 107,536.30 and 42,114.80 is: 58,118.44
Step by Step Solution
- Step 1: Write the proportion equation
77,924.84 : 107,536.30 = 42,114.80 : x - Step 2: Convert to fraction form
77,924.84/107,536.30 = 42,114.80/x - Step 3: Cross multiply
77,924.84x = 107,536.30 × 42,114.80 - Step 4: Simplify right side
77,924.84x = 4,528,869,767.24 - Step 5: Solve for x
x = 4,528,869,767.24/77,924.84 - Step 6: Final answer
x = 58,118.44
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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.