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Finding the Fourth Proportional to 57,756.88, 86,646.12 and 18,303.40

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Solution

The fourth proportional to 57,756.88, 86,646.12 and 18,303.40 is: 27,458.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,756.88 : 86,646.12 = 18,303.40 : x
  2. Step 2: Convert to fraction form
    57,756.88/86,646.12 = 18,303.40/x
  3. Step 3: Cross multiply
    57,756.88x = 86,646.12 × 18,303.40
  4. Step 4: Simplify right side
    57,756.88x = 1,585,918,592.81
  5. Step 5: Solve for x
    x = 1,585,918,592.81/57,756.88
  6. Step 6: Final answer
    x = 27,458.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.