Finding the Fourth Proportional to 75,219,771,951.36, 112,705,682,541.12 and 43,688,909,753.28
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Solution
The fourth proportional to 75,219,771,951.36, 112,705,682,541.12 and 43,688,909,753.28 is: 65,461,357,638.85
Step by Step Solution
- Step 1: Write the proportion equation
75,219,771,951.36 : 112,705,682,541.12 = 43,688,909,753.28 : x - Step 2: Convert to fraction form
75,219,771,951.36/112,705,682,541.12 = 43,688,909,753.28/x - Step 3: Cross multiply
75,219,771,951.36x = 112,705,682,541.12 × 43,688,909,753.28 - Step 4: Simplify right side
75,219,771,951.36x = 4,923,988,393,220,817,027,072 - Step 5: Solve for x
x = 4,923,988,393,220,817,027,072/75,219,771,951.36 - Step 6: Final answer
x = 65,461,357,638.85
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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.