Home / 78,408.02-117,497.21-38,886.21

Finding the Fourth Proportional to 78,408.02, 117,497.21 and 38,886.21

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Solution

The fourth proportional to 78,408.02, 117,497.21 and 38,886.21 is: 58,272.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,408.02 : 117,497.21 = 38,886.21 : x
  2. Step 2: Convert to fraction form
    78,408.02/117,497.21 = 38,886.21/x
  3. Step 3: Cross multiply
    78,408.02x = 117,497.21 × 38,886.21
  4. Step 4: Simplify right side
    78,408.02x = 4,569,020,988.04
  5. Step 5: Solve for x
    x = 4,569,020,988.04/78,408.02
  6. Step 6: Final answer
    x = 58,272.37

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1.5x scale

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.