Home / 90,058.32-135,116.64-43,305.12

Finding the Fourth Proportional to 90,058.32, 135,116.64 and 43,305.12

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Solution

The fourth proportional to 90,058.32, 135,116.64 and 43,305.12 is: 64,971.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,058.32 : 135,116.64 = 43,305.12 : x
  2. Step 2: Convert to fraction form
    90,058.32/135,116.64 = 43,305.12/x
  3. Step 3: Cross multiply
    90,058.32x = 135,116.64 × 43,305.12
  4. Step 4: Simplify right side
    90,058.32x = 5,851,242,309.20
  5. Step 5: Solve for x
    x = 5,851,242,309.20/90,058.32
  6. Step 6: Final answer
    x = 64,971.70

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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.