Finding the Fourth Proportional to 103,572,239.84, 142,929,994.08 and 56,529,746.72
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Solution
The fourth proportional to 103,572,239.84, 142,929,994.08 and 56,529,746.72 is: 78,011,215.91
Step by Step Solution
- Step 1: Write the proportion equation
103,572,239.84 : 142,929,994.08 = 56,529,746.72 : x - Step 2: Convert to fraction form
103,572,239.84/142,929,994.08 = 56,529,746.72/x - Step 3: Cross multiply
103,572,239.84x = 142,929,994.08 × 56,529,746.72 - Step 4: Simplify right side
103,572,239.84x = 8,079,796,364,033,500 - Step 5: Solve for x
x = 8,079,796,364,033,500/103,572,239.84 - Step 6: Final answer
x = 78,011,215.91
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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.