Home / 51,312.40-70,820.32-30,617.22

Finding the Fourth Proportional to 51,312.40, 70,820.32 and 30,617.22

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Solution

The fourth proportional to 51,312.40, 70,820.32 and 30,617.22 is: 42,257.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,312.40 : 70,820.32 = 30,617.22 : x
  2. Step 2: Convert to fraction form
    51,312.40/70,820.32 = 30,617.22/x
  3. Step 3: Cross multiply
    51,312.40x = 70,820.32 × 30,617.22
  4. Step 4: Simplify right side
    51,312.40x = 2,168,321,317.91
  5. Step 5: Solve for x
    x = 2,168,321,317.91/51,312.40
  6. Step 6: Final answer
    x = 42,257.26

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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.