Home / 42,659.20-63,988.80-28,662.40

Finding the Fourth Proportional to 42,659.20, 63,988.80 and 28,662.40

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Solution

The fourth proportional to 42,659.20, 63,988.80 and 28,662.40 is: 42,993.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,659.20 : 63,988.80 = 28,662.40 : x
  2. Step 2: Convert to fraction form
    42,659.20/63,988.80 = 28,662.40/x
  3. Step 3: Cross multiply
    42,659.20x = 63,988.80 × 28,662.40
  4. Step 4: Simplify right side
    42,659.20x = 1,834,072,581.12
  5. Step 5: Solve for x
    x = 1,834,072,581.12/42,659.20
  6. Step 6: Final answer
    x = 42,993.60

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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.