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Finding the Fourth Proportional to 67,628.80, 101,443.20 and 66,462.40

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Solution

The fourth proportional to 67,628.80, 101,443.20 and 66,462.40 is: 99,693.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,628.80 : 101,443.20 = 66,462.40 : x
  2. Step 2: Convert to fraction form
    67,628.80/101,443.20 = 66,462.40/x
  3. Step 3: Cross multiply
    67,628.80x = 101,443.20 × 66,462.40
  4. Step 4: Simplify right side
    67,628.80x = 6,742,158,535.68
  5. Step 5: Solve for x
    x = 6,742,158,535.68/67,628.80
  6. Step 6: Final answer
    x = 99,693.60

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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.