Home / 48,639.60-72,959.40-31,143.60

Finding the Fourth Proportional to 48,639.60, 72,959.40 and 31,143.60

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Solution

The fourth proportional to 48,639.60, 72,959.40 and 31,143.60 is: 46,715.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,639.60 : 72,959.40 = 31,143.60 : x
  2. Step 2: Convert to fraction form
    48,639.60/72,959.40 = 31,143.60/x
  3. Step 3: Cross multiply
    48,639.60x = 72,959.40 × 31,143.60
  4. Step 4: Simplify right side
    48,639.60x = 2,272,218,369.84
  5. Step 5: Solve for x
    x = 2,272,218,369.84/48,639.60
  6. Step 6: Final answer
    x = 46,715.40

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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.