Finding the Fourth Proportional to 30,575,475.21, 42,178,076.70 and 18,176,749.08
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Solution
The fourth proportional to 30,575,475.21, 42,178,076.70 and 18,176,749.08 is: 25,074,354.91
Step by Step Solution
- Step 1: Write the proportion equation
30,575,475.21 : 42,178,076.70 = 18,176,749.08 : x - Step 2: Convert to fraction form
30,575,475.21/42,178,076.70 = 18,176,749.08/x - Step 3: Cross multiply
30,575,475.21x = 42,178,076.70 × 18,176,749.08 - Step 4: Simplify right side
30,575,475.21x = 766,660,316,852,894.38 - Step 5: Solve for x
x = 766,660,316,852,894.38/30,575,475.21 - Step 6: Final answer
x = 25,074,354.91
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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.