Home / 66,715.38-92,142.81-45,457.74

Finding the Fourth Proportional to 66,715.38, 92,142.81 and 45,457.74

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Solution

The fourth proportional to 66,715.38, 92,142.81 and 45,457.74 is: 62,783.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,715.38 : 92,142.81 = 45,457.74 : x
  2. Step 2: Convert to fraction form
    66,715.38/92,142.81 = 45,457.74/x
  3. Step 3: Cross multiply
    66,715.38x = 92,142.81 × 45,457.74
  4. Step 4: Simplify right side
    66,715.38x = 4,188,603,899.85
  5. Step 5: Solve for x
    x = 4,188,603,899.85/66,715.38
  6. Step 6: Final answer
    x = 62,783.18

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1.5x scale

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.