Finding the Fourth Proportional to 97,985,886.72, 135,211,734.72 and 56,735,563.20
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Solution
The fourth proportional to 97,985,886.72, 135,211,734.72 and 56,735,563.20 is: 78,289,988.26
Step by Step Solution
- Step 1: Write the proportion equation
97,985,886.72 : 135,211,734.72 = 56,735,563.20 : x - Step 2: Convert to fraction form
97,985,886.72/135,211,734.72 = 56,735,563.20/x - Step 3: Cross multiply
97,985,886.72x = 135,211,734.72 × 56,735,563.20 - Step 4: Simplify right side
97,985,886.72x = 7,671,313,920,588,195 - Step 5: Solve for x
x = 7,671,313,920,588,195/97,985,886.72 - Step 6: Final answer
x = 78,289,988.26
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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.