Finding the Fourth Proportional to 77,149.63, 114,881.36 and 74,312.02
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Solution
The fourth proportional to 77,149.63, 114,881.36 and 74,312.02 is: 110,655.95
Step by Step Solution
- Step 1: Write the proportion equation
77,149.63 : 114,881.36 = 74,312.02 : x - Step 2: Convert to fraction form
77,149.63/114,881.36 = 74,312.02/x - Step 3: Cross multiply
77,149.63x = 114,881.36 × 74,312.02 - Step 4: Simplify right side
77,149.63x = 8,537,065,921.95 - Step 5: Solve for x
x = 8,537,065,921.95/77,149.63 - Step 6: Final answer
x = 110,655.95
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.