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Finding the Fourth Proportional to 77,573.71, 107,063.30 and 47,376.40

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Solution

The fourth proportional to 77,573.71, 107,063.30 and 47,376.40 is: 65,386.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,573.71 : 107,063.30 = 47,376.40 : x
  2. Step 2: Convert to fraction form
    77,573.71/107,063.30 = 47,376.40/x
  3. Step 3: Cross multiply
    77,573.71x = 107,063.30 × 47,376.40
  4. Step 4: Simplify right side
    77,573.71x = 5,072,273,726.12
  5. Step 5: Solve for x
    x = 5,072,273,726.12/77,573.71
  6. Step 6: Final answer
    x = 65,386.50

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1.5x scale

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.