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Finding the Fourth Proportional to 64,865.40, 97,152.30 and 39,496.20

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Solution

The fourth proportional to 64,865.40, 97,152.30 and 39,496.20 is: 59,155.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,865.40 : 97,152.30 = 39,496.20 : x
  2. Step 2: Convert to fraction form
    64,865.40/97,152.30 = 39,496.20/x
  3. Step 3: Cross multiply
    64,865.40x = 97,152.30 × 39,496.20
  4. Step 4: Simplify right side
    64,865.40x = 3,837,146,671.26
  5. Step 5: Solve for x
    x = 3,837,146,671.26/64,865.40
  6. Step 6: Final answer
    x = 59,155.52

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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.