Finding the Fourth Proportional to 79,712,897.80, 119,569,346.70 and 78,957,070.60
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Solution
The fourth proportional to 79,712,897.80, 119,569,346.70 and 78,957,070.60 is: 118,435,605.90
Step by Step Solution
- Step 1: Write the proportion equation
79,712,897.80 : 119,569,346.70 = 78,957,070.60 : x - Step 2: Convert to fraction form
79,712,897.80/119,569,346.70 = 78,957,070.60/x - Step 3: Cross multiply
79,712,897.80x = 119,569,346.70 × 78,957,070.60 - Step 4: Simplify right side
79,712,897.80x = 9,440,845,348,987,776 - Step 5: Solve for x
x = 9,440,845,348,987,776/79,712,897.80 - Step 6: Final answer
x = 118,435,605.90
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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.