Finding the Fourth Proportional to 42,465,378.79, 63,687,570.45 and 18,201,554.20
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Solution
The fourth proportional to 42,465,378.79, 63,687,570.45 and 18,201,554.20 is: 27,297,831.75
Step by Step Solution
- Step 1: Write the proportion equation
42,465,378.79 : 63,687,570.45 = 18,201,554.20 : x - Step 2: Convert to fraction form
42,465,378.79/63,687,570.45 = 18,201,554.20/x - Step 3: Cross multiply
42,465,378.79x = 63,687,570.45 × 18,201,554.20 - Step 4: Simplify right side
42,465,378.79x = 1,159,212,765,411,993.50 - Step 5: Solve for x
x = 1,159,212,765,411,993.50/42,465,378.79 - Step 6: Final answer
x = 27,297,831.75
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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.