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Finding the Fourth Proportional to 76,013.60, 114,020.40 and 51,130.40

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Solution

The fourth proportional to 76,013.60, 114,020.40 and 51,130.40 is: 76,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,013.60 : 114,020.40 = 51,130.40 : x
  2. Step 2: Convert to fraction form
    76,013.60/114,020.40 = 51,130.40/x
  3. Step 3: Cross multiply
    76,013.60x = 114,020.40 × 51,130.40
  4. Step 4: Simplify right side
    76,013.60x = 5,829,908,660.16
  5. Step 5: Solve for x
    x = 5,829,908,660.16/76,013.60
  6. Step 6: Final answer
    x = 76,695.60

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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.