Finding the Fourth Proportional to 76,345.76, 105,355.19 and 42,354.08
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Solution
The fourth proportional to 76,345.76, 105,355.19 and 42,354.08 is: 58,447.54
Step by Step Solution
- Step 1: Write the proportion equation
76,345.76 : 105,355.19 = 42,354.08 : x - Step 2: Convert to fraction form
76,345.76/105,355.19 = 42,354.08/x - Step 3: Cross multiply
76,345.76x = 105,355.19 × 42,354.08 - Step 4: Simplify right side
76,345.76x = 4,462,221,407.13 - Step 5: Solve for x
x = 4,462,221,407.13/76,345.76 - Step 6: Final answer
x = 58,447.54
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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.