Home / 79,090.32-118,635.44-39,638.20

Finding the Fourth Proportional to 79,090.32, 118,635.44 and 39,638.20

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Solution

The fourth proportional to 79,090.32, 118,635.44 and 39,638.20 is: 59,457.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,090.32 : 118,635.44 = 39,638.20 : x
  2. Step 2: Convert to fraction form
    79,090.32/118,635.44 = 39,638.20/x
  3. Step 3: Cross multiply
    79,090.32x = 118,635.44 × 39,638.20
  4. Step 4: Simplify right side
    79,090.32x = 4,702,495,297.81
  5. Step 5: Solve for x
    x = 4,702,495,297.81/79,090.32
  6. Step 6: Final answer
    x = 59,457.28

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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.