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Finding the Fourth Proportional to 45,797.20, 68,695.80 and 42,006.40

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Solution

The fourth proportional to 45,797.20, 68,695.80 and 42,006.40 is: 63,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,797.20 : 68,695.80 = 42,006.40 : x
  2. Step 2: Convert to fraction form
    45,797.20/68,695.80 = 42,006.40/x
  3. Step 3: Cross multiply
    45,797.20x = 68,695.80 × 42,006.40
  4. Step 4: Simplify right side
    45,797.20x = 2,885,663,253.12
  5. Step 5: Solve for x
    x = 2,885,663,253.12/45,797.20
  6. Step 6: Final answer
    x = 63,009.60

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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.