Home / 42,817.95-64,221.26-19,439.01

Finding the Fourth Proportional to 42,817.95, 64,221.26 and 19,439.01

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Solution

The fourth proportional to 42,817.95, 64,221.26 and 19,439.01 is: 29,155.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,817.95 : 64,221.26 = 19,439.01 : x
  2. Step 2: Convert to fraction form
    42,817.95/64,221.26 = 19,439.01/x
  3. Step 3: Cross multiply
    42,817.95x = 64,221.26 × 19,439.01
  4. Step 4: Simplify right side
    42,817.95x = 1,248,397,618.16
  5. Step 5: Solve for x
    x = 1,248,397,618.16/42,817.95
  6. Step 6: Final answer
    x = 29,155.94

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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.