Home / 63,215.16-87,245.28-61,138.12

Finding the Fourth Proportional to 63,215.16, 87,245.28 and 61,138.12

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Solution

The fourth proportional to 63,215.16, 87,245.28 and 61,138.12 is: 84,378.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,215.16 : 87,245.28 = 61,138.12 : x
  2. Step 2: Convert to fraction form
    63,215.16/87,245.28 = 61,138.12/x
  3. Step 3: Cross multiply
    63,215.16x = 87,245.28 × 61,138.12
  4. Step 4: Simplify right side
    63,215.16x = 5,334,012,398.07
  5. Step 5: Solve for x
    x = 5,334,012,398.07/63,215.16
  6. Step 6: Final answer
    x = 84,378.69

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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.