Home / 72,035.10-99,411.09-40,210.11

Finding the Fourth Proportional to 72,035.10, 99,411.09 and 40,210.11

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Solution

The fourth proportional to 72,035.10, 99,411.09 and 40,210.11 is: 55,491.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,035.10 : 99,411.09 = 40,210.11 : x
  2. Step 2: Convert to fraction form
    72,035.10/99,411.09 = 40,210.11/x
  3. Step 3: Cross multiply
    72,035.10x = 99,411.09 × 40,210.11
  4. Step 4: Simplify right side
    72,035.10x = 3,997,330,864.12
  5. Step 5: Solve for x
    x = 3,997,330,864.12/72,035.10
  6. Step 6: Final answer
    x = 55,491.43

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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.