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Finding the Fourth Proportional to 64,365.68, 88,824.50 and 39,215.20

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Solution

The fourth proportional to 64,365.68, 88,824.50 and 39,215.20 is: 54,116.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,365.68 : 88,824.50 = 39,215.20 : x
  2. Step 2: Convert to fraction form
    64,365.68/88,824.50 = 39,215.20/x
  3. Step 3: Cross multiply
    64,365.68x = 88,824.50 × 39,215.20
  4. Step 4: Simplify right side
    64,365.68x = 3,483,270,532.40
  5. Step 5: Solve for x
    x = 3,483,270,532.40/64,365.68
  6. Step 6: Final answer
    x = 54,116.89

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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.