Home / 72,140.22-99,549.81-40,302.90

Finding the Fourth Proportional to 72,140.22, 99,549.81 and 40,302.90

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Solution

The fourth proportional to 72,140.22, 99,549.81 and 40,302.90 is: 55,615.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,140.22 : 99,549.81 = 40,302.90 : x
  2. Step 2: Convert to fraction form
    72,140.22/99,549.81 = 40,302.90/x
  3. Step 3: Cross multiply
    72,140.22x = 99,549.81 × 40,302.90
  4. Step 4: Simplify right side
    72,140.22x = 4,012,146,037.45
  5. Step 5: Solve for x
    x = 4,012,146,037.45/72,140.22
  6. Step 6: Final answer
    x = 55,615.94

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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.