Home / 88,139.12-121,631.76-47,852.54

Finding the Fourth Proportional to 88,139.12, 121,631.76 and 47,852.54

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Solution

The fourth proportional to 88,139.12, 121,631.76 and 47,852.54 is: 66,036.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,139.12 : 121,631.76 = 47,852.54 : x
  2. Step 2: Convert to fraction form
    88,139.12/121,631.76 = 47,852.54/x
  3. Step 3: Cross multiply
    88,139.12x = 121,631.76 × 47,852.54
  4. Step 4: Simplify right side
    88,139.12x = 5,820,388,660.67
  5. Step 5: Solve for x
    x = 5,820,388,660.67/88,139.12
  6. Step 6: Final answer
    x = 66,036.38

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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.