Home / 45,332.80-67,999.20-42,913.60

Finding the Fourth Proportional to 45,332.80, 67,999.20 and 42,913.60

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Solution

The fourth proportional to 45,332.80, 67,999.20 and 42,913.60 is: 64,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,332.80 : 67,999.20 = 42,913.60 : x
  2. Step 2: Convert to fraction form
    45,332.80/67,999.20 = 42,913.60/x
  3. Step 3: Cross multiply
    45,332.80x = 67,999.20 × 42,913.60
  4. Step 4: Simplify right side
    45,332.80x = 2,918,090,469.12
  5. Step 5: Solve for x
    x = 2,918,090,469.12/45,332.80
  6. Step 6: Final answer
    x = 64,370.40

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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.