Finding the Fourth Proportional to 90,578,985.95, 124,982,395.96 and 53,420,893.67
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Solution
The fourth proportional to 90,578,985.95, 124,982,395.96 and 53,420,893.67 is: 73,711,040.32
Step by Step Solution
- Step 1: Write the proportion equation
90,578,985.95 : 124,982,395.96 = 53,420,893.67 : x - Step 2: Convert to fraction form
90,578,985.95/124,982,395.96 = 53,420,893.67/x - Step 3: Cross multiply
90,578,985.95x = 124,982,395.96 × 53,420,893.67 - Step 4: Simplify right side
90,578,985.95x = 6,676,671,285,200,997 - Step 5: Solve for x
x = 6,676,671,285,200,997/90,578,985.95 - Step 6: Final answer
x = 73,711,040.32
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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.