Home / 78,726.02-118,085.43-25,420.46

Finding the Fourth Proportional to 78,726.02, 118,085.43 and 25,420.46

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Solution

The fourth proportional to 78,726.02, 118,085.43 and 25,420.46 is: 38,129.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,726.02 : 118,085.43 = 25,420.46 : x
  2. Step 2: Convert to fraction form
    78,726.02/118,085.43 = 25,420.46/x
  3. Step 3: Cross multiply
    78,726.02x = 118,085.43 × 25,420.46
  4. Step 4: Simplify right side
    78,726.02x = 3,001,785,949.90
  5. Step 5: Solve for x
    x = 3,001,785,949.90/78,726.02
  6. Step 6: Final answer
    x = 38,129.53

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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.