Home / 85,639.20-118,178.64-49,830.24

Finding the Fourth Proportional to 85,639.20, 118,178.64 and 49,830.24

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Solution

The fourth proportional to 85,639.20, 118,178.64 and 49,830.24 is: 68,763.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,639.20 : 118,178.64 = 49,830.24 : x
  2. Step 2: Convert to fraction form
    85,639.20/118,178.64 = 49,830.24/x
  3. Step 3: Cross multiply
    85,639.20x = 118,178.64 × 49,830.24
  4. Step 4: Simplify right side
    85,639.20x = 5,888,869,994.07
  5. Step 5: Solve for x
    x = 5,888,869,994.07/85,639.20
  6. Step 6: Final answer
    x = 68,763.72

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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.