Finding the Fourth Proportional to 101,010.13, 139,394.28 and 55,687.08
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Solution
The fourth proportional to 101,010.13, 139,394.28 and 55,687.08 is: 76,848.34
Step by Step Solution
- Step 1: Write the proportion equation
101,010.13 : 139,394.28 = 55,687.08 : x - Step 2: Convert to fraction form
101,010.13/139,394.28 = 55,687.08/x - Step 3: Cross multiply
101,010.13x = 139,394.28 × 55,687.08 - Step 4: Simplify right side
101,010.13x = 7,762,460,421.90 - Step 5: Solve for x
x = 7,762,460,421.90/101,010.13 - Step 6: Final answer
x = 76,848.34
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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.