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Finding the Fourth Proportional to 91,969.68, 126,917.64 and 56,154.72

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Solution

The fourth proportional to 91,969.68, 126,917.64 and 56,154.72 is: 77,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,969.68 : 126,917.64 = 56,154.72 : x
  2. Step 2: Convert to fraction form
    91,969.68/126,917.64 = 56,154.72/x
  3. Step 3: Cross multiply
    91,969.68x = 126,917.64 × 56,154.72
  4. Step 4: Simplify right side
    91,969.68x = 7,127,024,537.26
  5. Step 5: Solve for x
    x = 7,127,024,537.26/91,969.68
  6. Step 6: Final answer
    x = 77,493.20

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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.