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Finding the Fourth Proportional to 79,970.24, 110,362.48 and 45,989.76

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Solution

The fourth proportional to 79,970.24, 110,362.48 and 45,989.76 is: 63,467.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,970.24 : 110,362.48 = 45,989.76 : x
  2. Step 2: Convert to fraction form
    79,970.24/110,362.48 = 45,989.76/x
  3. Step 3: Cross multiply
    79,970.24x = 110,362.48 × 45,989.76
  4. Step 4: Simplify right side
    79,970.24x = 5,075,543,968.20
  5. Step 5: Solve for x
    x = 5,075,543,968.20/79,970.24
  6. Step 6: Final answer
    x = 63,467.91

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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.