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Finding the Fourth Proportional to 42,420.70, 63,631.05 and 26,674.30

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Solution

The fourth proportional to 42,420.70, 63,631.05 and 26,674.30 is: 40,011.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,420.70 : 63,631.05 = 26,674.30 : x
  2. Step 2: Convert to fraction form
    42,420.70/63,631.05 = 26,674.30/x
  3. Step 3: Cross multiply
    42,420.70x = 63,631.05 × 26,674.30
  4. Step 4: Simplify right side
    42,420.70x = 1,697,313,717.02
  5. Step 5: Solve for x
    x = 1,697,313,717.02/42,420.70
  6. Step 6: Final answer
    x = 40,011.45

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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.