Home / 81,230.02-121,854.75-28,628.62

Finding the Fourth Proportional to 81,230.02, 121,854.75 and 28,628.62

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Solution

The fourth proportional to 81,230.02, 121,854.75 and 28,628.62 is: 42,946.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,230.02 : 121,854.75 = 28,628.62 : x
  2. Step 2: Convert to fraction form
    81,230.02/121,854.75 = 28,628.62/x
  3. Step 3: Cross multiply
    81,230.02x = 121,854.75 × 28,628.62
  4. Step 4: Simplify right side
    81,230.02x = 3,488,533,332.95
  5. Step 5: Solve for x
    x = 3,488,533,332.95/81,230.02
  6. Step 6: Final answer
    x = 42,946.36

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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.