Home / 85,708.28-118,270.86-47,977.40

Finding the Fourth Proportional to 85,708.28, 118,270.86 and 47,977.40

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Solution

The fourth proportional to 85,708.28, 118,270.86 and 47,977.40 is: 66,205.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,708.28 : 118,270.86 = 47,977.40 : x
  2. Step 2: Convert to fraction form
    85,708.28/118,270.86 = 47,977.40/x
  3. Step 3: Cross multiply
    85,708.28x = 118,270.86 × 47,977.40
  4. Step 4: Simplify right side
    85,708.28x = 5,674,328,358.56
  5. Step 5: Solve for x
    x = 5,674,328,358.56/85,708.28
  6. Step 6: Final answer
    x = 66,205.14

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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.