Finding the Fourth Proportional to 90,988,398.72, 125,563,980.96 and 49,735,455.84
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Solution
The fourth proportional to 90,988,398.72, 125,563,980.96 and 49,735,455.84 is: 68,634,923.99
Step by Step Solution
- Step 1: Write the proportion equation
90,988,398.72 : 125,563,980.96 = 49,735,455.84 : x - Step 2: Convert to fraction form
90,988,398.72/125,563,980.96 = 49,735,455.84/x - Step 3: Cross multiply
90,988,398.72x = 125,563,980.96 × 49,735,455.84 - Step 4: Simplify right side
90,988,398.72x = 6,244,981,830,130,681 - Step 5: Solve for x
x = 6,244,981,830,130,681/90,988,398.72 - Step 6: Final answer
x = 68,634,923.99
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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.