Finding the Fourth Proportional to 97,009,990.20, 145,514,985.30 and 48,495,331.80
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Solution
The fourth proportional to 97,009,990.20, 145,514,985.30 and 48,495,331.80 is: 72,742,997.70
Step by Step Solution
- Step 1: Write the proportion equation
97,009,990.20 : 145,514,985.30 = 48,495,331.80 : x - Step 2: Convert to fraction form
97,009,990.20/145,514,985.30 = 48,495,331.80/x - Step 3: Cross multiply
97,009,990.20x = 145,514,985.30 × 48,495,331.80 - Step 4: Simplify right side
97,009,990.20x = 7,056,797,493,995,623 - Step 5: Solve for x
x = 7,056,797,493,995,623/97,009,990.20 - Step 6: Final answer
x = 72,742,997.70
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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.