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Finding the Fourth Proportional to 45,207.40, 67,811.10 and 42,903.40

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Solution

The fourth proportional to 45,207.40, 67,811.10 and 42,903.40 is: 64,355.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,207.40 : 67,811.10 = 42,903.40 : x
  2. Step 2: Convert to fraction form
    45,207.40/67,811.10 = 42,903.40/x
  3. Step 3: Cross multiply
    45,207.40x = 67,811.10 × 42,903.40
  4. Step 4: Simplify right side
    45,207.40x = 2,909,326,747.74
  5. Step 5: Solve for x
    x = 2,909,326,747.74/45,207.40
  6. Step 6: Final answer
    x = 64,355.10

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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.