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Finding the Fourth Proportional to 45,378.40, 67,970.40 and 37,602.40

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Solution

The fourth proportional to 45,378.40, 67,970.40 and 37,602.40 is: 56,323.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,378.40 : 67,970.40 = 37,602.40 : x
  2. Step 2: Convert to fraction form
    45,378.40/67,970.40 = 37,602.40/x
  3. Step 3: Cross multiply
    45,378.40x = 67,970.40 × 37,602.40
  4. Step 4: Simplify right side
    45,378.40x = 2,555,850,168.96
  5. Step 5: Solve for x
    x = 2,555,850,168.96/45,378.40
  6. Step 6: Final answer
    x = 56,323.06

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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.