Finding the Fourth Proportional to 77,309,482.68, 106,687,697.58 and 42,027,280.74
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Solution
The fourth proportional to 77,309,482.68, 106,687,697.58 and 42,027,280.74 is: 57,997,979.84
Step by Step Solution
- Step 1: Write the proportion equation
77,309,482.68 : 106,687,697.58 = 42,027,280.74 : x - Step 2: Convert to fraction form
77,309,482.68/106,687,697.58 = 42,027,280.74/x - Step 3: Cross multiply
77,309,482.68x = 106,687,697.58 × 42,027,280.74 - Step 4: Simplify right side
77,309,482.68x = 4,483,793,817,698,879 - Step 5: Solve for x
x = 4,483,793,817,698,879/77,309,482.68 - Step 6: Final answer
x = 57,997,979.84
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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.