Finding the Fourth Proportional to 81,587,751.12, 122,381,626.68 and 26,985,665.70
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Solution
The fourth proportional to 81,587,751.12, 122,381,626.68 and 26,985,665.70 is: 40,478,498.55
Step by Step Solution
- Step 1: Write the proportion equation
81,587,751.12 : 122,381,626.68 = 26,985,665.70 : x - Step 2: Convert to fraction form
81,587,751.12/122,381,626.68 = 26,985,665.70/x - Step 3: Cross multiply
81,587,751.12x = 122,381,626.68 × 26,985,665.70 - Step 4: Simplify right side
81,587,751.12x = 3,302,549,665,408,681 - Step 5: Solve for x
x = 3,302,549,665,408,681/81,587,751.12 - Step 6: Final answer
x = 40,478,498.55
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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.