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Finding the Fourth Proportional to 64,392.30, 96,608.70 and 31,113.45

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Solution

The fourth proportional to 64,392.30, 96,608.70 and 31,113.45 is: 46,679.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,392.30 : 96,608.70 = 31,113.45 : x
  2. Step 2: Convert to fraction form
    64,392.30/96,608.70 = 31,113.45/x
  3. Step 3: Cross multiply
    64,392.30x = 96,608.70 × 31,113.45
  4. Step 4: Simplify right side
    64,392.30x = 3,005,829,957.02
  5. Step 5: Solve for x
    x = 3,005,829,957.02/64,392.30
  6. Step 6: Final answer
    x = 46,679.96

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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.