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Finding the Fourth Proportional to 85,685.01, 118,228.50 and 53,835.51

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Solution

The fourth proportional to 85,685.01, 118,228.50 and 53,835.51 is: 74,282.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,685.01 : 118,228.50 = 53,835.51 : x
  2. Step 2: Convert to fraction form
    85,685.01/118,228.50 = 53,835.51/x
  3. Step 3: Cross multiply
    85,685.01x = 118,228.50 × 53,835.51
  4. Step 4: Simplify right side
    85,685.01x = 6,364,891,594.04
  5. Step 5: Solve for x
    x = 6,364,891,594.04/85,685.01
  6. Step 6: Final answer
    x = 74,282.44

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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.