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Finding the Fourth Proportional to 47,386, 65,392.68 and 28,526.77

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Solution

The fourth proportional to 47,386, 65,392.68 and 28,526.77 is: 39,366.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,386 : 65,392.68 = 28,526.77 : x
  2. Step 2: Convert to fraction form
    47,386/65,392.68 = 28,526.77/x
  3. Step 3: Cross multiply
    47,386x = 65,392.68 × 28,526.77
  4. Step 4: Simplify right side
    47,386x = 1,865,441,942.04
  5. Step 5: Solve for x
    x = 1,865,441,942.04/47,386
  6. Step 6: Final answer
    x = 39,366.94

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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.