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Finding the Fourth Proportional to 61,437.76, 92,160.79 and 20,894.76

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Solution

The fourth proportional to 61,437.76, 92,160.79 and 20,894.76 is: 31,343.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,437.76 : 92,160.79 = 20,894.76 : x
  2. Step 2: Convert to fraction form
    61,437.76/92,160.79 = 20,894.76/x
  3. Step 3: Cross multiply
    61,437.76x = 92,160.79 × 20,894.76
  4. Step 4: Simplify right side
    61,437.76x = 1,925,677,536.22
  5. Step 5: Solve for x
    x = 1,925,677,536.22/61,437.76
  6. Step 6: Final answer
    x = 31,343.55

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1.5x scale

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.