Home / 42,715.08-64,029.72-14,615.88

Finding the Fourth Proportional to 42,715.08, 64,029.72 and 14,615.88

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Solution

The fourth proportional to 42,715.08, 64,029.72 and 14,615.88 is: 21,909.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,715.08 : 64,029.72 = 14,615.88 : x
  2. Step 2: Convert to fraction form
    42,715.08/64,029.72 = 14,615.88/x
  3. Step 3: Cross multiply
    42,715.08x = 64,029.72 × 14,615.88
  4. Step 4: Simplify right side
    42,715.08x = 935,850,703.95
  5. Step 5: Solve for x
    x = 935,850,703.95/42,715.08
  6. Step 6: Final answer
    x = 21,909.14

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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.