Home / 88,365.12-121,945.11-48,078.91

Finding the Fourth Proportional to 88,365.12, 121,945.11 and 48,078.91

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Solution

The fourth proportional to 88,365.12, 121,945.11 and 48,078.91 is: 66,349.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,365.12 : 121,945.11 = 48,078.91 : x
  2. Step 2: Convert to fraction form
    88,365.12/121,945.11 = 48,078.91/x
  3. Step 3: Cross multiply
    88,365.12x = 121,945.11 × 48,078.91
  4. Step 4: Simplify right side
    88,365.12x = 5,862,987,968.63
  5. Step 5: Solve for x
    x = 5,862,987,968.63/88,365.12
  6. Step 6: Final answer
    x = 66,349.57

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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.