Finding the Fourth Proportional to 81,236,281.68, 121,849,937.21 and 59,399,038.84
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Solution
The fourth proportional to 81,236,281.68, 121,849,937.21 and 59,399,038.84 is: 89,095,278.65
Step by Step Solution
- Step 1: Write the proportion equation
81,236,281.68 : 121,849,937.21 = 59,399,038.84 : x - Step 2: Convert to fraction form
81,236,281.68/121,849,937.21 = 59,399,038.84/x - Step 3: Cross multiply
81,236,281.68x = 121,849,937.21 × 59,399,038.84 - Step 4: Simplify right side
81,236,281.68x = 7,237,769,152,832,224 - Step 5: Solve for x
x = 7,237,769,152,832,224/81,236,281.68 - Step 6: Final answer
x = 89,095,278.65
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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.