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Finding the Fourth Proportional to 76,966.36, 106,114.71 and 63,117.52

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Solution

The fourth proportional to 76,966.36, 106,114.71 and 63,117.52 is: 87,021.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,966.36 : 106,114.71 = 63,117.52 : x
  2. Step 2: Convert to fraction form
    76,966.36/106,114.71 = 63,117.52/x
  3. Step 3: Cross multiply
    76,966.36x = 106,114.71 × 63,117.52
  4. Step 4: Simplify right side
    76,966.36x = 6,697,697,330.72
  5. Step 5: Solve for x
    x = 6,697,697,330.72/76,966.36
  6. Step 6: Final answer
    x = 87,021.10

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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.