Home / 42,156.99-63,232.65-19,988.10

Finding the Fourth Proportional to 42,156.99, 63,232.65 and 19,988.10

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Solution

The fourth proportional to 42,156.99, 63,232.65 and 19,988.10 is: 29,980.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,156.99 : 63,232.65 = 19,988.10 : x
  2. Step 2: Convert to fraction form
    42,156.99/63,232.65 = 19,988.10/x
  3. Step 3: Cross multiply
    42,156.99x = 63,232.65 × 19,988.10
  4. Step 4: Simplify right side
    42,156.99x = 1,263,900,531.47
  5. Step 5: Solve for x
    x = 1,263,900,531.47/42,156.99
  6. Step 6: Final answer
    x = 29,980.81

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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.