Home / 83,931.14-115,840.50-48,121.40

Finding the Fourth Proportional to 83,931.14, 115,840.50 and 48,121.40

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Solution

The fourth proportional to 83,931.14, 115,840.50 and 48,121.40 is: 66,416.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,931.14 : 115,840.50 = 48,121.40 : x
  2. Step 2: Convert to fraction form
    83,931.14/115,840.50 = 48,121.40/x
  3. Step 3: Cross multiply
    83,931.14x = 115,840.50 × 48,121.40
  4. Step 4: Simplify right side
    83,931.14x = 5,574,407,036.70
  5. Step 5: Solve for x
    x = 5,574,407,036.70/83,931.14
  6. Step 6: Final answer
    x = 66,416.43

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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.