Finding the Fourth Proportional to 99,924,301.28, 137,933,588.40 and 65,125,457.12
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Solution
The fourth proportional to 99,924,301.28, 137,933,588.40 and 65,125,457.12 is: 89,897,931.55
Step by Step Solution
- Step 1: Write the proportion equation
99,924,301.28 : 137,933,588.40 = 65,125,457.12 : x - Step 2: Convert to fraction form
99,924,301.28/137,933,588.40 = 65,125,457.12/x - Step 3: Cross multiply
99,924,301.28x = 137,933,588.40 × 65,125,457.12 - Step 4: Simplify right side
99,924,301.28x = 8,982,987,996,751,929 - Step 5: Solve for x
x = 8,982,987,996,751,929/99,924,301.28 - Step 6: Final answer
x = 89,897,931.55
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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.