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Finding the Fourth Proportional to 73,883.20, 110,824.80 and 42,702.40

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Solution

The fourth proportional to 73,883.20, 110,824.80 and 42,702.40 is: 64,053.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,883.20 : 110,824.80 = 42,702.40 : x
  2. Step 2: Convert to fraction form
    73,883.20/110,824.80 = 42,702.40/x
  3. Step 3: Cross multiply
    73,883.20x = 110,824.80 × 42,702.40
  4. Step 4: Simplify right side
    73,883.20x = 4,732,484,939.52
  5. Step 5: Solve for x
    x = 4,732,484,939.52/73,883.20
  6. Step 6: Final answer
    x = 64,053.60

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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.