Home / 47,690.10-65,802.78-30,667.68

Finding the Fourth Proportional to 47,690.10, 65,802.78 and 30,667.68

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Solution

The fourth proportional to 47,690.10, 65,802.78 and 30,667.68 is: 42,315.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,690.10 : 65,802.78 = 30,667.68 : x
  2. Step 2: Convert to fraction form
    47,690.10/65,802.78 = 30,667.68/x
  3. Step 3: Cross multiply
    47,690.10x = 65,802.78 × 30,667.68
  4. Step 4: Simplify right side
    47,690.10x = 2,018,018,600.15
  5. Step 5: Solve for x
    x = 2,018,018,600.15/47,690.10
  6. Step 6: Final answer
    x = 42,315.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.