Home / 74,480.10-111,720.15-42,987.30

Finding the Fourth Proportional to 74,480.10, 111,720.15 and 42,987.30

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Solution

The fourth proportional to 74,480.10, 111,720.15 and 42,987.30 is: 64,480.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,480.10 : 111,720.15 = 42,987.30 : x
  2. Step 2: Convert to fraction form
    74,480.10/111,720.15 = 42,987.30/x
  3. Step 3: Cross multiply
    74,480.10x = 111,720.15 × 42,987.30
  4. Step 4: Simplify right side
    74,480.10x = 4,802,547,604.10
  5. Step 5: Solve for x
    x = 4,802,547,604.10/74,480.10
  6. Step 6: Final answer
    x = 64,480.95

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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.