Home / 72,177.55-99,607.22-40,347.79

Finding the Fourth Proportional to 72,177.55, 99,607.22 and 40,347.79

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Solution

The fourth proportional to 72,177.55, 99,607.22 and 40,347.79 is: 55,681.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,177.55 : 99,607.22 = 40,347.79 : x
  2. Step 2: Convert to fraction form
    72,177.55/99,607.22 = 40,347.79/x
  3. Step 3: Cross multiply
    72,177.55x = 99,607.22 × 40,347.79
  4. Step 4: Simplify right side
    72,177.55x = 4,018,930,895.59
  5. Step 5: Solve for x
    x = 4,018,930,895.59/72,177.55
  6. Step 6: Final answer
    x = 55,681.18

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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.