Home / 85,639.60-118,180.21-47,400.72

Finding the Fourth Proportional to 85,639.60, 118,180.21 and 47,400.72

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Solution

The fourth proportional to 85,639.60, 118,180.21 and 47,400.72 is: 65,411.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,639.60 : 118,180.21 = 47,400.72 : x
  2. Step 2: Convert to fraction form
    85,639.60/118,180.21 = 47,400.72/x
  3. Step 3: Cross multiply
    85,639.60x = 118,180.21 × 47,400.72
  4. Step 4: Simplify right side
    85,639.60x = 5,601,827,043.75
  5. Step 5: Solve for x
    x = 5,601,827,043.75/85,639.60
  6. Step 6: Final answer
    x = 65,411.64

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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.