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Finding the Fourth Proportional to 91,698.65, 126,566.64 and 55,908.39

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Solution

The fourth proportional to 91,698.65, 126,566.64 and 55,908.39 is: 77,167.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,698.65 : 126,566.64 = 55,908.39 : x
  2. Step 2: Convert to fraction form
    91,698.65/126,566.64 = 55,908.39/x
  3. Step 3: Cross multiply
    91,698.65x = 126,566.64 × 55,908.39
  4. Step 4: Simplify right side
    91,698.65x = 7,076,137,070.11
  5. Step 5: Solve for x
    x = 7,076,137,070.11/91,698.65
  6. Step 6: Final answer
    x = 77,167.30

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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.