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Finding the Fourth Proportional to 54,009.90, 75,438.90 and 54,009.90

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Solution

The fourth proportional to 54,009.90, 75,438.90 and 54,009.90 is: 75,438.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,009.90 : 75,438.90 = 54,009.90 : x
  2. Step 2: Convert to fraction form
    54,009.90/75,438.90 = 54,009.90/x
  3. Step 3: Cross multiply
    54,009.90x = 75,438.90 × 54,009.90
  4. Step 4: Simplify right side
    54,009.90x = 4,074,447,445.11
  5. Step 5: Solve for x
    x = 4,074,447,445.11/54,009.90
  6. Step 6: Final answer
    x = 75,438.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.