Finding the Fourth Proportional to 77,294,491.38, 106,665,769.35 and 42,486,811.74
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Solution
The fourth proportional to 77,294,491.38, 106,665,769.35 and 42,486,811.74 is: 58,631,454.59
Step by Step Solution
- Step 1: Write the proportion equation
77,294,491.38 : 106,665,769.35 = 42,486,811.74 : x - Step 2: Convert to fraction form
77,294,491.38/106,665,769.35 = 42,486,811.74/x - Step 3: Cross multiply
77,294,491.38x = 106,665,769.35 × 42,486,811.74 - Step 4: Simplify right side
77,294,491.38x = 4,531,888,461,475,712 - Step 5: Solve for x
x = 4,531,888,461,475,712/77,294,491.38 - Step 6: Final answer
x = 58,631,454.59
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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.