Finding the Fourth Proportional to 77,610,815.40, 107,075,881.08 and 49,748,890.08
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Solution
The fourth proportional to 77,610,815.40, 107,075,881.08 and 49,748,890.08 is: 68,636,132.87
Step by Step Solution
- Step 1: Write the proportion equation
77,610,815.40 : 107,075,881.08 = 49,748,890.08 : x - Step 2: Convert to fraction form
77,610,815.40/107,075,881.08 = 49,748,890.08/x - Step 3: Cross multiply
77,610,815.40x = 107,075,881.08 × 49,748,890.08 - Step 4: Simplify right side
77,610,815.40x = 5,326,906,238,068,071 - Step 5: Solve for x
x = 5,326,906,238,068,071/77,610,815.40 - Step 6: Final answer
x = 68,636,132.87
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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.