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Finding the Fourth Proportional to 57,007.87, 78,693.06 and 51,029.20

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Solution

The fourth proportional to 57,007.87, 78,693.06 and 51,029.20 is: 70,440.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,007.87 : 78,693.06 = 51,029.20 : x
  2. Step 2: Convert to fraction form
    57,007.87/78,693.06 = 51,029.20/x
  3. Step 3: Cross multiply
    57,007.87x = 78,693.06 × 51,029.20
  4. Step 4: Simplify right side
    57,007.87x = 4,015,643,897.35
  5. Step 5: Solve for x
    x = 4,015,643,897.35/57,007.87
  6. Step 6: Final answer
    x = 70,440.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.