Home / 42,972.84-64,430.67-21,920.52

Finding the Fourth Proportional to 42,972.84, 64,430.67 and 21,920.52

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Solution

The fourth proportional to 42,972.84, 64,430.67 and 21,920.52 is: 32,866.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,972.84 : 64,430.67 = 21,920.52 : x
  2. Step 2: Convert to fraction form
    42,972.84/64,430.67 = 21,920.52/x
  3. Step 3: Cross multiply
    42,972.84x = 64,430.67 × 21,920.52
  4. Step 4: Simplify right side
    42,972.84x = 1,412,353,790.35
  5. Step 5: Solve for x
    x = 1,412,353,790.35/42,972.84
  6. Step 6: Final answer
    x = 32,866.20

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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.