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Finding the Fourth Proportional to 61,388.04, 84,720 and 37,519.32

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Solution

The fourth proportional to 61,388.04, 84,720 and 37,519.32 is: 51,779.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,388.04 : 84,720 = 37,519.32 : x
  2. Step 2: Convert to fraction form
    61,388.04/84,720 = 37,519.32/x
  3. Step 3: Cross multiply
    61,388.04x = 84,720 × 37,519.32
  4. Step 4: Simplify right side
    61,388.04x = 3,178,636,790.40
  5. Step 5: Solve for x
    x = 3,178,636,790.40/61,388.04
  6. Step 6: Final answer
    x = 51,779.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.