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Finding the Fourth Proportional to 77,461.20, 115,973.10 and 77,461.20

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Solution

The fourth proportional to 77,461.20, 115,973.10 and 77,461.20 is: 115,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,461.20 : 115,973.10 = 77,461.20 : x
  2. Step 2: Convert to fraction form
    77,461.20/115,973.10 = 77,461.20/x
  3. Step 3: Cross multiply
    77,461.20x = 115,973.10 × 77,461.20
  4. Step 4: Simplify right side
    77,461.20x = 8,983,415,493.72
  5. Step 5: Solve for x
    x = 8,983,415,493.72/77,461.20
  6. Step 6: Final answer
    x = 115,973.10

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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.