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Finding the Fourth Proportional to 60,762.40, 91,143.60 and 51,139.60

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Solution

The fourth proportional to 60,762.40, 91,143.60 and 51,139.60 is: 76,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,762.40 : 91,143.60 = 51,139.60 : x
  2. Step 2: Convert to fraction form
    60,762.40/91,143.60 = 51,139.60/x
  3. Step 3: Cross multiply
    60,762.40x = 91,143.60 × 51,139.60
  4. Step 4: Simplify right side
    60,762.40x = 4,661,047,246.56
  5. Step 5: Solve for x
    x = 4,661,047,246.56/60,762.40
  6. Step 6: Final answer
    x = 76,709.40

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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.