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Finding the Fourth Proportional to 65,931.02, 98,866.96 and 39,289.58

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Solution

The fourth proportional to 65,931.02, 98,866.96 and 39,289.58 is: 58,916.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,931.02 : 98,866.96 = 39,289.58 : x
  2. Step 2: Convert to fraction form
    65,931.02/98,866.96 = 39,289.58/x
  3. Step 3: Cross multiply
    65,931.02x = 98,866.96 × 39,289.58
  4. Step 4: Simplify right side
    65,931.02x = 3,884,441,334.28
  5. Step 5: Solve for x
    x = 3,884,441,334.28/65,931.02
  6. Step 6: Final answer
    x = 58,916.75

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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.