Home / 85,839.78-118,457.55-47,077.50

Finding the Fourth Proportional to 85,839.78, 118,457.55 and 47,077.50

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Solution

The fourth proportional to 85,839.78, 118,457.55 and 47,077.50 is: 64,966.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,839.78 : 118,457.55 = 47,077.50 : x
  2. Step 2: Convert to fraction form
    85,839.78/118,457.55 = 47,077.50/x
  3. Step 3: Cross multiply
    85,839.78x = 118,457.55 × 47,077.50
  4. Step 4: Simplify right side
    85,839.78x = 5,576,685,310.13
  5. Step 5: Solve for x
    x = 5,576,685,310.13/85,839.78
  6. Step 6: Final answer
    x = 64,966.21

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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.