Home / 70,037.12-96,669.60-39,840.16

Finding the Fourth Proportional to 70,037.12, 96,669.60 and 39,840.16

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Solution

The fourth proportional to 70,037.12, 96,669.60 and 39,840.16 is: 54,989.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,037.12 : 96,669.60 = 39,840.16 : x
  2. Step 2: Convert to fraction form
    70,037.12/96,669.60 = 39,840.16/x
  3. Step 3: Cross multiply
    70,037.12x = 96,669.60 × 39,840.16
  4. Step 4: Simplify right side
    70,037.12x = 3,851,332,331.14
  5. Step 5: Solve for x
    x = 3,851,332,331.14/70,037.12
  6. Step 6: Final answer
    x = 54,989.87

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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.