Home / 81,830.47-112,924.28-47,376.66

Finding the Fourth Proportional to 81,830.47, 112,924.28 and 47,376.66

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Solution

The fourth proportional to 81,830.47, 112,924.28 and 47,376.66 is: 65,378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,830.47 : 112,924.28 = 47,376.66 : x
  2. Step 2: Convert to fraction form
    81,830.47/112,924.28 = 47,376.66/x
  3. Step 3: Cross multiply
    81,830.47x = 112,924.28 × 47,376.66
  4. Step 4: Simplify right side
    81,830.47x = 5,349,974,877.77
  5. Step 5: Solve for x
    x = 5,349,974,877.77/81,830.47
  6. Step 6: Final answer
    x = 65,378.76

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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.