Finding the Fourth Proportional to 77,434.08, 107,073.36 and 61,490.40
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Solution
The fourth proportional to 77,434.08, 107,073.36 and 61,490.40 is: 85,026.95
Step by Step Solution
- Step 1: Write the proportion equation
77,434.08 : 107,073.36 = 61,490.40 : x - Step 2: Convert to fraction form
77,434.08/107,073.36 = 61,490.40/x - Step 3: Cross multiply
77,434.08x = 107,073.36 × 61,490.40 - Step 4: Simplify right side
77,434.08x = 6,583,983,735.74 - Step 5: Solve for x
x = 6,583,983,735.74/77,434.08 - Step 6: Final answer
x = 85,026.95
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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.