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Finding the Fourth Proportional to 45,342.40, 68,013.60 and 40,417.60

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Solution

The fourth proportional to 45,342.40, 68,013.60 and 40,417.60 is: 60,626.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,342.40 : 68,013.60 = 40,417.60 : x
  2. Step 2: Convert to fraction form
    45,342.40/68,013.60 = 40,417.60/x
  3. Step 3: Cross multiply
    45,342.40x = 68,013.60 × 40,417.60
  4. Step 4: Simplify right side
    45,342.40x = 2,748,946,479.36
  5. Step 5: Solve for x
    x = 2,748,946,479.36/45,342.40
  6. Step 6: Final answer
    x = 60,626.40

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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.