Finding the Fourth Proportional to 90,457,829.68, 135,701,878.86 and 71,026,271.80
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Solution
The fourth proportional to 90,457,829.68, 135,701,878.86 and 71,026,271.80 is: 106,551,290.98
Step by Step Solution
- Step 1: Write the proportion equation
90,457,829.68 : 135,701,878.86 = 71,026,271.80 : x - Step 2: Convert to fraction form
90,457,829.68/135,701,878.86 = 71,026,271.80/x - Step 3: Cross multiply
90,457,829.68x = 135,701,878.86 × 71,026,271.80 - Step 4: Simplify right side
90,457,829.68x = 9,638,398,531,681,034 - Step 5: Solve for x
x = 9,638,398,531,681,034/90,457,829.68 - Step 6: Final answer
x = 106,551,290.98
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.