Home / 42,830.74-64,261.23-19,136.08

Finding the Fourth Proportional to 42,830.74, 64,261.23 and 19,136.08

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Solution

The fourth proportional to 42,830.74, 64,261.23 and 19,136.08 is: 28,710.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,830.74 : 64,261.23 = 19,136.08 : x
  2. Step 2: Convert to fraction form
    42,830.74/64,261.23 = 19,136.08/x
  3. Step 3: Cross multiply
    42,830.74x = 64,261.23 × 19,136.08
  4. Step 4: Simplify right side
    42,830.74x = 1,229,708,038.18
  5. Step 5: Solve for x
    x = 1,229,708,038.18/42,830.74
  6. Step 6: Final answer
    x = 28,710.88

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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.