Finding the Fourth Proportional to 105,326,931.68, 145,287,609.24 and 69,563,591.36
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Solution
The fourth proportional to 105,326,931.68, 145,287,609.24 and 69,563,591.36 is: 95,955,779.95
Step by Step Solution
- Step 1: Write the proportion equation
105,326,931.68 : 145,287,609.24 = 69,563,591.36 : x - Step 2: Convert to fraction form
105,326,931.68/145,287,609.24 = 69,563,591.36/x - Step 3: Cross multiply
105,326,931.68x = 145,287,609.24 × 69,563,591.36 - Step 4: Simplify right side
105,326,931.68x = 10,106,727,878,842,720 - Step 5: Solve for x
x = 10,106,727,878,842,720/105,326,931.68 - Step 6: Final answer
x = 95,955,779.95
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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.