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Finding the Fourth Proportional to 77,855.66, 116,783.56 and 21,695.93

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Solution

The fourth proportional to 77,855.66, 116,783.56 and 21,695.93 is: 32,543.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,855.66 : 116,783.56 = 21,695.93 : x
  2. Step 2: Convert to fraction form
    77,855.66/116,783.56 = 21,695.93/x
  3. Step 3: Cross multiply
    77,855.66x = 116,783.56 × 21,695.93
  4. Step 4: Simplify right side
    77,855.66x = 2,533,727,942.91
  5. Step 5: Solve for x
    x = 2,533,727,942.91/77,855.66
  6. Step 6: Final answer
    x = 32,543.91

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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.