Home / 42,955-64,432.50-11,790.25

Finding the Fourth Proportional to 42,955, 64,432.50 and 11,790.25

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Solution

The fourth proportional to 42,955, 64,432.50 and 11,790.25 is: 17,685.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,955 : 64,432.50 = 11,790.25 : x
  2. Step 2: Convert to fraction form
    42,955/64,432.50 = 11,790.25/x
  3. Step 3: Cross multiply
    42,955x = 64,432.50 × 11,790.25
  4. Step 4: Simplify right side
    42,955x = 759,675,283.13
  5. Step 5: Solve for x
    x = 759,675,283.13/42,955
  6. Step 6: Final answer
    x = 17,685.38

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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.