Home / 70,640.40-97,485.36-38,807.28

Finding the Fourth Proportional to 70,640.40, 97,485.36 and 38,807.28

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Solution

The fourth proportional to 70,640.40, 97,485.36 and 38,807.28 is: 53,554.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,640.40 : 97,485.36 = 38,807.28 : x
  2. Step 2: Convert to fraction form
    70,640.40/97,485.36 = 38,807.28/x
  3. Step 3: Cross multiply
    70,640.40x = 97,485.36 × 38,807.28
  4. Step 4: Simplify right side
    70,640.40x = 3,783,141,661.42
  5. Step 5: Solve for x
    x = 3,783,141,661.42/70,640.40
  6. Step 6: Final answer
    x = 53,554.93

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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.