Finding the Fourth Proportional to 87,817,430.64, 121,187,934.28 and 48,661,742.28
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Solution
The fourth proportional to 87,817,430.64, 121,187,934.28 and 48,661,742.28 is: 67,153,137.85
Step by Step Solution
- Step 1: Write the proportion equation
87,817,430.64 : 121,187,934.28 = 48,661,742.28 : x - Step 2: Convert to fraction form
87,817,430.64/121,187,934.28 = 48,661,742.28/x - Step 3: Cross multiply
87,817,430.64x = 121,187,934.28 × 48,661,742.28 - Step 4: Simplify right side
87,817,430.64x = 5,897,216,025,378,938 - Step 5: Solve for x
x = 5,897,216,025,378,938/87,817,430.64 - Step 6: Final answer
x = 67,153,137.85
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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.