Finding the Fourth Proportional to 77,037.30, 115,555.95 and 71,569.80
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Solution
The fourth proportional to 77,037.30, 115,555.95 and 71,569.80 is: 107,354.70
Step by Step Solution
- Step 1: Write the proportion equation
77,037.30 : 115,555.95 = 71,569.80 : x - Step 2: Convert to fraction form
77,037.30/115,555.95 = 71,569.80/x - Step 3: Cross multiply
77,037.30x = 115,555.95 × 71,569.80 - Step 4: Simplify right side
77,037.30x = 8,270,316,230.31 - Step 5: Solve for x
x = 8,270,316,230.31/77,037.30 - Step 6: Final answer
x = 107,354.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.