Home / 72,079.16-99,457.32-40,248.08

Finding the Fourth Proportional to 72,079.16, 99,457.32 and 40,248.08

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Solution

The fourth proportional to 72,079.16, 99,457.32 and 40,248.08 is: 55,535.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,079.16 : 99,457.32 = 40,248.08 : x
  2. Step 2: Convert to fraction form
    72,079.16/99,457.32 = 40,248.08/x
  3. Step 3: Cross multiply
    72,079.16x = 99,457.32 × 40,248.08
  4. Step 4: Simplify right side
    72,079.16x = 4,002,966,171.95
  5. Step 5: Solve for x
    x = 4,002,966,171.95/72,079.16
  6. Step 6: Final answer
    x = 55,535.69

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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.