Finding the Fourth Proportional to 103,584,861.68, 142,944,901.08 and 56,540,372.72
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Solution
The fourth proportional to 103,584,861.68, 142,944,901.08 and 56,540,372.72 is: 78,024,509.13
Step by Step Solution
- Step 1: Write the proportion equation
103,584,861.68 : 142,944,901.08 = 56,540,372.72 : x - Step 2: Convert to fraction form
103,584,861.68/142,944,901.08 = 56,540,372.72/x - Step 3: Cross multiply
103,584,861.68x = 142,944,901.08 × 56,540,372.72 - Step 4: Simplify right side
103,584,861.68x = 8,082,157,985,486,731 - Step 5: Solve for x
x = 8,082,157,985,486,731/103,584,861.68 - Step 6: Final answer
x = 78,024,509.13
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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.