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Finding the Fourth Proportional to 78,762.87, 118,133.22 and 22,607.76

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Solution

The fourth proportional to 78,762.87, 118,133.22 and 22,607.76 is: 33,908.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,762.87 : 118,133.22 = 22,607.76 : x
  2. Step 2: Convert to fraction form
    78,762.87/118,133.22 = 22,607.76/x
  3. Step 3: Cross multiply
    78,762.87x = 118,133.22 × 22,607.76
  4. Step 4: Simplify right side
    78,762.87x = 2,670,727,485.79
  5. Step 5: Solve for x
    x = 2,670,727,485.79/78,762.87
  6. Step 6: Final answer
    x = 33,908.46

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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.