Home / 72,038.10-99,412.62-40,206.98

Finding the Fourth Proportional to 72,038.10, 99,412.62 and 40,206.98

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Solution

The fourth proportional to 72,038.10, 99,412.62 and 40,206.98 is: 55,485.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,038.10 : 99,412.62 = 40,206.98 : x
  2. Step 2: Convert to fraction form
    72,038.10/99,412.62 = 40,206.98/x
  3. Step 3: Cross multiply
    72,038.10x = 99,412.62 × 40,206.98
  4. Step 4: Simplify right side
    72,038.10x = 3,997,081,224.09
  5. Step 5: Solve for x
    x = 3,997,081,224.09/72,038.10
  6. Step 6: Final answer
    x = 55,485.66

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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.