Finding the Fourth Proportional to 77,221,264.32, 106,566,622.56 and 42,417,170.88
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Solution
The fourth proportional to 77,221,264.32, 106,566,622.56 and 42,417,170.88 is: 58,536,397.70
Step by Step Solution
- Step 1: Write the proportion equation
77,221,264.32 : 106,566,622.56 = 42,417,170.88 : x - Step 2: Convert to fraction form
77,221,264.32/106,566,622.56 = 42,417,170.88/x - Step 3: Cross multiply
77,221,264.32x = 106,566,622.56 × 42,417,170.88 - Step 4: Simplify right side
77,221,264.32x = 4,520,254,639,231,983 - Step 5: Solve for x
x = 4,520,254,639,231,983/77,221,264.32 - Step 6: Final answer
x = 58,536,397.70
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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.