Home / 79,963.28-120,018.08-40,547.60

Finding the Fourth Proportional to 79,963.28, 120,018.08 and 40,547.60

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Solution

The fourth proportional to 79,963.28, 120,018.08 and 40,547.60 is: 60,858.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,963.28 : 120,018.08 = 40,547.60 : x
  2. Step 2: Convert to fraction form
    79,963.28/120,018.08 = 40,547.60/x
  3. Step 3: Cross multiply
    79,963.28x = 120,018.08 × 40,547.60
  4. Step 4: Simplify right side
    79,963.28x = 4,866,445,100.61
  5. Step 5: Solve for x
    x = 4,866,445,100.61/79,963.28
  6. Step 6: Final answer
    x = 60,858.50

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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.