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Finding the Fourth Proportional to 77,812.90, 116,828.70 and 48,288.40

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Solution

The fourth proportional to 77,812.90, 116,828.70 and 48,288.40 is: 72,500.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,812.90 : 116,828.70 = 48,288.40 : x
  2. Step 2: Convert to fraction form
    77,812.90/116,828.70 = 48,288.40/x
  3. Step 3: Cross multiply
    77,812.90x = 116,828.70 × 48,288.40
  4. Step 4: Simplify right side
    77,812.90x = 5,641,470,997.08
  5. Step 5: Solve for x
    x = 5,641,470,997.08/77,812.90
  6. Step 6: Final answer
    x = 72,500.46

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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.