Home / 72,549.95-100,106.30-40,720.19

Finding the Fourth Proportional to 72,549.95, 100,106.30 and 40,720.19

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Solution

The fourth proportional to 72,549.95, 100,106.30 and 40,720.19 is: 56,186.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,549.95 : 100,106.30 = 40,720.19 : x
  2. Step 2: Convert to fraction form
    72,549.95/100,106.30 = 40,720.19/x
  3. Step 3: Cross multiply
    72,549.95x = 100,106.30 × 40,720.19
  4. Step 4: Simplify right side
    72,549.95x = 4,076,347,352.60
  5. Step 5: Solve for x
    x = 4,076,347,352.60/72,549.95
  6. Step 6: Final answer
    x = 56,186.77

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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.