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Finding the Fourth Proportional to 72,807.49, 100,457.67 and 40,964.77

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Solution

The fourth proportional to 72,807.49, 100,457.67 and 40,964.77 is: 56,522.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,807.49 : 100,457.67 = 40,964.77 : x
  2. Step 2: Convert to fraction form
    72,807.49/100,457.67 = 40,964.77/x
  3. Step 3: Cross multiply
    72,807.49x = 100,457.67 × 40,964.77
  4. Step 4: Simplify right side
    72,807.49x = 4,115,225,346.29
  5. Step 5: Solve for x
    x = 4,115,225,346.29/72,807.49
  6. Step 6: Final answer
    x = 56,522.01

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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.