Finding the Fourth Proportional to 77,124,214.88, 106,433,374.77 and 42,316,896.09
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Solution
The fourth proportional to 77,124,214.88, 106,433,374.77 and 42,316,896.09 is: 58,398,391.06
Step by Step Solution
- Step 1: Write the proportion equation
77,124,214.88 : 106,433,374.77 = 42,316,896.09 : x - Step 2: Convert to fraction form
77,124,214.88/106,433,374.77 = 42,316,896.09/x - Step 3: Cross multiply
77,124,214.88x = 106,433,374.77 × 42,316,896.09 - Step 4: Simplify right side
77,124,214.88x = 4,503,930,060,650,118 - Step 5: Solve for x
x = 4,503,930,060,650,118/77,124,214.88 - Step 6: Final answer
x = 58,398,391.06
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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.