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Finding the Fourth Proportional to 65,210.70, 97,880.85 and 31,968.30

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Solution

The fourth proportional to 65,210.70, 97,880.85 and 31,968.30 is: 47,984.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,210.70 : 97,880.85 = 31,968.30 : x
  2. Step 2: Convert to fraction form
    65,210.70/97,880.85 = 31,968.30/x
  3. Step 3: Cross multiply
    65,210.70x = 97,880.85 × 31,968.30
  4. Step 4: Simplify right side
    65,210.70x = 3,129,084,377.06
  5. Step 5: Solve for x
    x = 3,129,084,377.06/65,210.70
  6. Step 6: Final answer
    x = 47,984.22

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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.