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Finding the Fourth Proportional to 42,970.90, 64,479.84 and 16,676.68

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Solution

The fourth proportional to 42,970.90, 64,479.84 and 16,676.68 is: 25,024.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,970.90 : 64,479.84 = 16,676.68 : x
  2. Step 2: Convert to fraction form
    42,970.90/64,479.84 = 16,676.68/x
  3. Step 3: Cross multiply
    42,970.90x = 64,479.84 × 16,676.68
  4. Step 4: Simplify right side
    42,970.90x = 1,075,309,658.13
  5. Step 5: Solve for x
    x = 1,075,309,658.13/42,970.90
  6. Step 6: Final answer
    x = 25,024.14

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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.