Home / 85,685.04-118,228.55-53,835.48

Finding the Fourth Proportional to 85,685.04, 118,228.55 and 53,835.48

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Solution

The fourth proportional to 85,685.04, 118,228.55 and 53,835.48 is: 74,282.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,685.04 : 118,228.55 = 53,835.48 : x
  2. Step 2: Convert to fraction form
    85,685.04/118,228.55 = 53,835.48/x
  3. Step 3: Cross multiply
    85,685.04x = 118,228.55 × 53,835.48
  4. Step 4: Simplify right side
    85,685.04x = 6,364,890,469.78
  5. Step 5: Solve for x
    x = 6,364,890,469.78/85,685.04
  6. Step 6: Final answer
    x = 74,282.40

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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.