Home / 61,129.02-91,663.29-21,680.22

Finding the Fourth Proportional to 61,129.02, 91,663.29 and 21,680.22

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Solution

The fourth proportional to 61,129.02, 91,663.29 and 21,680.22 is: 32,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,129.02 : 91,663.29 = 21,680.22 : x
  2. Step 2: Convert to fraction form
    61,129.02/91,663.29 = 21,680.22/x
  3. Step 3: Cross multiply
    61,129.02x = 91,663.29 × 21,680.22
  4. Step 4: Simplify right side
    61,129.02x = 1,987,280,293.12
  5. Step 5: Solve for x
    x = 1,987,280,293.12/61,129.02
  6. Step 6: Final answer
    x = 32,509.60

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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.