Finding the Fourth Proportional to 90,636,811.68, 135,823,336.56 and 56,019,303.84
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Solution
The fourth proportional to 90,636,811.68, 135,823,336.56 and 56,019,303.84 is: 83,947,444.95
Step by Step Solution
- Step 1: Write the proportion equation
90,636,811.68 : 135,823,336.56 = 56,019,303.84 : x - Step 2: Convert to fraction form
90,636,811.68/135,823,336.56 = 56,019,303.84/x - Step 3: Cross multiply
90,636,811.68x = 135,823,336.56 × 56,019,303.84 - Step 4: Simplify right side
90,636,811.68x = 7,608,728,759,317,221 - Step 5: Solve for x
x = 7,608,728,759,317,221/90,636,811.68 - Step 6: Final answer
x = 83,947,444.95
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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.