Home / 81,111.10-121,629.60-24,931.66

Finding the Fourth Proportional to 81,111.10, 121,629.60 and 24,931.66

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Solution

The fourth proportional to 81,111.10, 121,629.60 and 24,931.66 is: 37,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,111.10 : 121,629.60 = 24,931.66 : x
  2. Step 2: Convert to fraction form
    81,111.10/121,629.60 = 24,931.66/x
  3. Step 3: Cross multiply
    81,111.10x = 121,629.60 × 24,931.66
  4. Step 4: Simplify right side
    81,111.10x = 3,032,427,833.14
  5. Step 5: Solve for x
    x = 3,032,427,833.14/81,111.10
  6. Step 6: Final answer
    x = 37,386.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.