Finding the Fourth Proportional to 70,167,791.13, 105,243,645.28 and 18,357,393.53
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Solution
The fourth proportional to 70,167,791.13, 105,243,645.28 and 18,357,393.53 is: 27,533,986.49
Step by Step Solution
- Step 1: Write the proportion equation
70,167,791.13 : 105,243,645.28 = 18,357,393.53 : x - Step 2: Convert to fraction form
70,167,791.13/105,243,645.28 = 18,357,393.53/x - Step 3: Cross multiply
70,167,791.13x = 105,243,645.28 × 18,357,393.53 - Step 4: Simplify right side
70,167,791.13x = 1,931,999,012,936,687.25 - Step 5: Solve for x
x = 1,931,999,012,936,687.25/70,167,791.13 - Step 6: Final answer
x = 27,533,986.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.