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Finding the Fourth Proportional to 61,152.20, 91,728.30 and 53,376.20

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Solution

The fourth proportional to 61,152.20, 91,728.30 and 53,376.20 is: 80,064.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,152.20 : 91,728.30 = 53,376.20 : x
  2. Step 2: Convert to fraction form
    61,152.20/91,728.30 = 53,376.20/x
  3. Step 3: Cross multiply
    61,152.20x = 91,728.30 × 53,376.20
  4. Step 4: Simplify right side
    61,152.20x = 4,896,108,086.46
  5. Step 5: Solve for x
    x = 4,896,108,086.46/61,152.20
  6. Step 6: Final answer
    x = 80,064.30

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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.