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Finding the Fourth Proportional to 79,341.50, 109,491.36 and 45,807.50

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Solution

The fourth proportional to 79,341.50, 109,491.36 and 45,807.50 is: 63,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,341.50 : 109,491.36 = 45,807.50 : x
  2. Step 2: Convert to fraction form
    79,341.50/109,491.36 = 45,807.50/x
  3. Step 3: Cross multiply
    79,341.50x = 109,491.36 × 45,807.50
  4. Step 4: Simplify right side
    79,341.50x = 5,015,525,473.20
  5. Step 5: Solve for x
    x = 5,015,525,473.20/79,341.50
  6. Step 6: Final answer
    x = 63,214.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.