Home / 72,177.36-99,606.96-40,347.60

Finding the Fourth Proportional to 72,177.36, 99,606.96 and 40,347.60

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Solution

The fourth proportional to 72,177.36, 99,606.96 and 40,347.60 is: 55,680.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,177.36 : 99,606.96 = 40,347.60 : x
  2. Step 2: Convert to fraction form
    72,177.36/99,606.96 = 40,347.60/x
  3. Step 3: Cross multiply
    72,177.36x = 99,606.96 × 40,347.60
  4. Step 4: Simplify right side
    72,177.36x = 4,018,901,779.30
  5. Step 5: Solve for x
    x = 4,018,901,779.30/72,177.36
  6. Step 6: Final answer
    x = 55,680.92

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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.