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Finding the Fourth Proportional to 42,802.76, 64,212.90 and 14,719.17

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Solution

The fourth proportional to 42,802.76, 64,212.90 and 14,719.17 is: 22,081.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,802.76 : 64,212.90 = 14,719.17 : x
  2. Step 2: Convert to fraction form
    42,802.76/64,212.90 = 14,719.17/x
  3. Step 3: Cross multiply
    42,802.76x = 64,212.90 × 14,719.17
  4. Step 4: Simplify right side
    42,802.76x = 945,160,415.70
  5. Step 5: Solve for x
    x = 945,160,415.70/42,802.76
  6. Step 6: Final answer
    x = 22,081.76

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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.