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Finding the Fourth Proportional to 72,762.04, 100,410.70 and 40,931.16

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Solution

The fourth proportional to 72,762.04, 100,410.70 and 40,931.16 is: 56,484.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,762.04 : 100,410.70 = 40,931.16 : x
  2. Step 2: Convert to fraction form
    72,762.04/100,410.70 = 40,931.16/x
  3. Step 3: Cross multiply
    72,762.04x = 100,410.70 × 40,931.16
  4. Step 4: Simplify right side
    72,762.04x = 4,109,926,427.41
  5. Step 5: Solve for x
    x = 4,109,926,427.41/72,762.04
  6. Step 6: Final answer
    x = 56,484.49

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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.