Finding the Fourth Proportional to 85,536,478.80, 128,210,239.80 and 47,225,487.60
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Solution
The fourth proportional to 85,536,478.80, 128,210,239.80 and 47,225,487.60 is: 70,786,068.99
Step by Step Solution
- Step 1: Write the proportion equation
85,536,478.80 : 128,210,239.80 = 47,225,487.60 : x - Step 2: Convert to fraction form
85,536,478.80/128,210,239.80 = 47,225,487.60/x - Step 3: Cross multiply
85,536,478.80x = 128,210,239.80 × 47,225,487.60 - Step 4: Simplify right side
85,536,478.80x = 6,054,791,089,867,927 - Step 5: Solve for x
x = 6,054,791,089,867,927/85,536,478.80 - Step 6: Final answer
x = 70,786,068.99
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1.5x scale
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.