Home / 72,136.60-99,547.94-40,305.16

Finding the Fourth Proportional to 72,136.60, 99,547.94 and 40,305.16

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Solution

The fourth proportional to 72,136.60, 99,547.94 and 40,305.16 is: 55,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,136.60 : 99,547.94 = 40,305.16 : x
  2. Step 2: Convert to fraction form
    72,136.60/99,547.94 = 40,305.16/x
  3. Step 3: Cross multiply
    72,136.60x = 99,547.94 × 40,305.16
  4. Step 4: Simplify right side
    72,136.60x = 4,012,295,649.37
  5. Step 5: Solve for x
    x = 4,012,295,649.37/72,136.60
  6. Step 6: Final answer
    x = 55,620.80

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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.