Home / 77,510.40-106,963.20-43,975.68

Finding the Fourth Proportional to 77,510.40, 106,963.20 and 43,975.68

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Solution

The fourth proportional to 77,510.40, 106,963.20 and 43,975.68 is: 60,685.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,510.40 : 106,963.20 = 43,975.68 : x
  2. Step 2: Convert to fraction form
    77,510.40/106,963.20 = 43,975.68/x
  3. Step 3: Cross multiply
    77,510.40x = 106,963.20 × 43,975.68
  4. Step 4: Simplify right side
    77,510.40x = 4,703,779,454.98
  5. Step 5: Solve for x
    x = 4,703,779,454.98/77,510.40
  6. Step 6: Final answer
    x = 60,685.78

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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.