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Finding the Fourth Proportional to 72,931.40, 109,416.54 and 26,184.68

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Solution

The fourth proportional to 72,931.40, 109,416.54 and 26,184.68 is: 39,283.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,931.40 : 109,416.54 = 26,184.68 : x
  2. Step 2: Convert to fraction form
    72,931.40/109,416.54 = 26,184.68/x
  3. Step 3: Cross multiply
    72,931.40x = 109,416.54 × 26,184.68
  4. Step 4: Simplify right side
    72,931.40x = 2,865,036,539.52
  5. Step 5: Solve for x
    x = 2,865,036,539.52/72,931.40
  6. Step 6: Final answer
    x = 39,283.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.