Home / 88,221-121,745.15-47,934.81

Finding the Fourth Proportional to 88,221, 121,745.15 and 47,934.81

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Solution

The fourth proportional to 88,221, 121,745.15 and 47,934.81 is: 66,150.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,221 : 121,745.15 = 47,934.81 : x
  2. Step 2: Convert to fraction form
    88,221/121,745.15 = 47,934.81/x
  3. Step 3: Cross multiply
    88,221x = 121,745.15 × 47,934.81
  4. Step 4: Simplify right side
    88,221x = 5,835,830,394.00
  5. Step 5: Solve for x
    x = 5,835,830,394.00/88,221
  6. Step 6: Final answer
    x = 66,150.13

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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.