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Finding the Fourth Proportional to 77,348.40, 115,925.40 and 37,820.40

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Solution

The fourth proportional to 77,348.40, 115,925.40 and 37,820.40 is: 56,683.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,348.40 : 115,925.40 = 37,820.40 : x
  2. Step 2: Convert to fraction form
    77,348.40/115,925.40 = 37,820.40/x
  3. Step 3: Cross multiply
    77,348.40x = 115,925.40 × 37,820.40
  4. Step 4: Simplify right side
    77,348.40x = 4,384,344,998.16
  5. Step 5: Solve for x
    x = 4,384,344,998.16/77,348.40
  6. Step 6: Final answer
    x = 56,683.07

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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.