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Finding the Fourth Proportional to 79,980.54, 110,366.70 and 45,987.30

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Solution

The fourth proportional to 79,980.54, 110,366.70 and 45,987.30 is: 63,458.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,980.54 : 110,366.70 = 45,987.30 : x
  2. Step 2: Convert to fraction form
    79,980.54/110,366.70 = 45,987.30/x
  3. Step 3: Cross multiply
    79,980.54x = 110,366.70 × 45,987.30
  4. Step 4: Simplify right side
    79,980.54x = 5,075,466,542.91
  5. Step 5: Solve for x
    x = 5,075,466,542.91/79,980.54
  6. Step 6: Final answer
    x = 63,458.77

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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.