Finding the Fourth Proportional to 90,555,398.58, 124,977,742.79 and 51,409,848.18
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Solution
The fourth proportional to 90,555,398.58, 124,977,742.79 and 51,409,848.18 is: 70,952,001.57
Step by Step Solution
- Step 1: Write the proportion equation
90,555,398.58 : 124,977,742.79 = 51,409,848.18 : x - Step 2: Convert to fraction form
90,555,398.58/124,977,742.79 = 51,409,848.18/x - Step 3: Cross multiply
90,555,398.58x = 124,977,742.79 × 51,409,848.18 - Step 4: Simplify right side
90,555,398.58x = 6,425,086,782,455,940 - Step 5: Solve for x
x = 6,425,086,782,455,940/90,555,398.58 - Step 6: Final answer
x = 70,952,001.57
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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.