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Finding the Fourth Proportional to 61,316.70, 91,975.05 and 45,764.70

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Solution

The fourth proportional to 61,316.70, 91,975.05 and 45,764.70 is: 68,647.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,316.70 : 91,975.05 = 45,764.70 : x
  2. Step 2: Convert to fraction form
    61,316.70/91,975.05 = 45,764.70/x
  3. Step 3: Cross multiply
    61,316.70x = 91,975.05 × 45,764.70
  4. Step 4: Simplify right side
    61,316.70x = 4,209,210,570.74
  5. Step 5: Solve for x
    x = 4,209,210,570.74/61,316.70
  6. Step 6: Final answer
    x = 68,647.05

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Similar ratio
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1.5x scale

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.