Home / 85,931.08-118,660.22-53,720.76

Finding the Fourth Proportional to 85,931.08, 118,660.22 and 53,720.76

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Solution

The fourth proportional to 85,931.08, 118,660.22 and 53,720.76 is: 74,181.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,931.08 : 118,660.22 = 53,720.76 : x
  2. Step 2: Convert to fraction form
    85,931.08/118,660.22 = 53,720.76/x
  3. Step 3: Cross multiply
    85,931.08x = 118,660.22 × 53,720.76
  4. Step 4: Simplify right side
    85,931.08x = 6,374,517,200.17
  5. Step 5: Solve for x
    x = 6,374,517,200.17/85,931.08
  6. Step 6: Final answer
    x = 74,181.74

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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.