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Finding the Fourth Proportional to 97,771.68, 134,931.60 and 55,330.20

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Solution

The fourth proportional to 97,771.68, 134,931.60 and 55,330.20 is: 76,359.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,771.68 : 134,931.60 = 55,330.20 : x
  2. Step 2: Convert to fraction form
    97,771.68/134,931.60 = 55,330.20/x
  3. Step 3: Cross multiply
    97,771.68x = 134,931.60 × 55,330.20
  4. Step 4: Simplify right side
    97,771.68x = 7,465,792,414.32
  5. Step 5: Solve for x
    x = 7,465,792,414.32/97,771.68
  6. Step 6: Final answer
    x = 76,359.46

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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.