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Finding the Fourth Proportional to 77,340.40, 115,913.40 and 37,812.40

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Solution

The fourth proportional to 77,340.40, 115,913.40 and 37,812.40 is: 56,671.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,340.40 : 115,913.40 = 37,812.40 : x
  2. Step 2: Convert to fraction form
    77,340.40/115,913.40 = 37,812.40/x
  3. Step 3: Cross multiply
    77,340.40x = 115,913.40 × 37,812.40
  4. Step 4: Simplify right side
    77,340.40x = 4,382,963,846.16
  5. Step 5: Solve for x
    x = 4,382,963,846.16/77,340.40
  6. Step 6: Final answer
    x = 56,671.08

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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.